Protect your sensitive skin in the summer! A complete guide to skincare routines based on dermatology

Hello, I'm Miko, the manager of Kokako Shoten!
It's been a few days since I returned from Hokkaido during the record-breaking heatwave of July.
Before we knew it, August had arrived and the scalp shampoo bar I had been longing for has finally been released!

Botanical Shampoo Bar

During my business trip in July, I met with the manufacturers of the rare Hokkaido ingredients used in this shampoo bar. I also had a meeting with SORRY KOUBOU, who also manufactures the beeswax balm series , and it was a very meaningful and enjoyable time!

We talk in detail about our passion for soap on the product page, so please take a look!

One thing we would like to draw your attention to in particular is that for those who suffer from scalp problems as well as atopic dermatitis, rosacea, acne, itching, and other problems around the chest, back, and face, shampoo may actually be one of the causes or a factor that worsens the symptoms. This is because shampoo comes into contact with the body when rinsing. This alone can be a major burden for those with extremely sensitive skin.

Furthermore, if you have been using these ingredients for many years on your scalp, where percutaneous absorption is high, why not take another look at surfactants? Please also read the related article below.

[Our Original] For those with scalp problems! Made with rare ingredients from Hokkaido! Botanical Shampoo Bar 60g

table of contents

[Our Original] For those with scalp problems! Made with rare ingredients from Hokkaido! Botanical Shampoo Bar 60g

My summer skincare routine for my super sensitive skin
The burden that conventional UV protection measures put on sensitive skin
How to choose a completely additive-free sunscreen that makes up less than 1% of the market
1. A complete analysis of TAEKO additive-free sunscreen
2. Serum type additive-free sunscreen that can be removed with soap TAEKO SPF50
"Defense Base" Theory: The Scientific Basis of the Vaseline Barrier
8-step morning skincare routine! Perfect UV protection for sensitive skin!
Frequently asked questions and misconceptions
Summary: Whoever controls summer controls beautiful skin

My summer skincare routine for my super sensitive skin

Well, this summer has been extremely hot, and it's been a trying season for people like me with extremely sensitive skin.

The problems that people with extremely sensitive skin face in the summer are not just simple sunburn. Sensitive skin, whose barrier function is easily weakened, is subject to the following multiple damages at the same time:

Direct damage from UV rays

Serious effects of UV-A rays on the dermis layer
Epidermal inflammatory response to UV-B rays
Cellular oxidation due to the large amount of reactive oxygen species

Indirect damage caused by environmental factors

Adhesion of air pollutants (PM2.5, ozone, etc.)
Allergic reactions to pollen and house dust
Sudden changes in humidity caused by air conditioning

Chemical irritation caused by conventional UV products

Contact dermatitis due to chemical UV absorbers
Preservatives disrupt the balance of normal bacteria
Chronic inflammation caused by synthetic fragrances and colorings

These complex factors intertwine, making sensitive skin even more sensitive, leading to a negative spiral where nothing you use seems to suit you.

The burden that conventional UV protection measures put on sensitive skin

Many commercially available UV products are developed for healthy skin , but for extremely sensitive skin with a weakened barrier function, these products can sometimes be "toxic."

6 dangerous sunscreen ingredients that accelerate skin aging

We will provide a detailed explanation of the high-risk ingredients contained in over 90% of sunscreens, along with scientific evidence.

[Dangerous ingredient 1] Chemical UV absorbers

Mechanism of action: Large amounts of active oxygen are generated when UV is converted to heat

Oxybenzone, octinoxate, avobenzone, and other sunscreens produce large amounts of reactive oxygen species (free radicals) when they absorb ultraviolet light and convert it into heat energy.

Damage at the molecular level : DNA damage, protein denaturation, lipid peroxidation
Visible symptoms : Inflammatory reaction, hyperpigmentation, fine lines due to collagen breakdown

[Dangerous ingredient 2] Synthetic surfactants

Mechanism of action: Destroys the natural barrier by emulsifying the sebum film

Sensitivity-enhancing surfactants emulsify and disrupt the skin's natural barrier:

Immediate effects : dryness, irritation, redness
Long-term effects : chronic inflammation, progressive sensitization, permanent impairment of barrier function

[Dangerous ingredient 3] Preservative systems (especially isothiazolinones)

Mechanism of action: Imbalance of normal flora and contact allergies

Parabens, phenoxyethanol, and isothiazolinones cause:

Acute reactions : contact dermatitis, allergic reactions
Chronic effects : disruption of normal skin flora, immune system overreaction

[Dangerous ingredient 4] Endocrine disruptors (oxybenzones)

Mechanism of action: Hormonal imbalance

Oxybenzone is absorbed through the skin and exhibits estrogenic effects:

Effects on hormones : Menstrual cycle disruption, skin quality instability
FDA concerns : Potential cancer risk also noted

Dangerous Ingredient 5: Volatile Silicones and Denatured Alcohol

Mechanism of action: Forced evaporation of water during evaporation

The price for temporary relief is:

Hidden damage : Skin moisture is forcibly taken away when evaporating
Long-term effects : chronic dryness, impaired barrier function

[Dangerous ingredient 6] Phototoxic substances

The most dangerous ingredient: the devilish ingredient that causes more spots the more you apply it

Due to the detailed mechanism described below, it reacts with ultraviolet rays and turns into a toxic substance, causing the paradoxical phenomenon that the more sunscreen you apply, the more spots you develop .

The terrifying mechanism of particularly dangerous "phototoxic substances"

The four-step destructive process of phototoxicity

Stage 1: Highly toxic phototoxic substances react with UV-A and change their chemical structure to become toxic substances.

Stage 2: Mass release of hydroxyl radicals . The highly toxic substance generates a large amount of the most destructive hydroxyl radical (•OH).

Stage 3: Indiscriminate cell attack

Mutagenesis by DNA double-strand breaks
Promotion of cell death by cell membrane lipid peroxidation
Overproduction of inflammatory cytokines

Stage 4: Runaway melanin production

Abnormally increased tyrosinase activity
Melanin production continues even during non-UV light hours
Fixation of pigmentation → "The more you apply, the more spots appear" completed

Many people know that UV absorbers have a negative impact on coral growth, but there are still many people who are ignorant about phototoxicity, so there is a blind spot where people use many UV products without realizing that they contain them.

The real names of particularly dangerous phototoxic substances

Furocoumarin compounds (citrus essential oils)

Special hazard : Irreversible binding to DNA (DNA cross-linking)
Clinical symptoms : Bell's-eye dermatitis, persistent pigmentation

Avobenzone (Dibenzoylmethane type)

Problem : Long half-life, free radical production continues even at night
Accumulative effect : The longer you use it, the greater the accumulated damage.

How to tell the difference by ingredient label

Citrus ○○ Peel Oil (expressed)
Butyl Methoxydibenzoylmethane (Keyword: dibenzoyl )
Benzophenone-3, -4, -8… (number series)

How to choose a completely additive-free sunscreen that makes up less than 1% of the market

I highly recommend the TAEKO additive-free sunscreen that we sell in our store!
This is a best-selling product that has been sold for many years by Seikatsu Club, a Japanese natural living cooperative.

A complete analysis of TAEKO additive-free sunscreen

Completely free of nine dangerous ingredient categories

✅ Chemical UV absorbers: 0
✅ Volatile oils and silicones: 0
✅ Synthetic surfactants: 0
✅ Preservatives (parabens, isothiazolinones, etc.): 0
✅ Synthetic fragrances and colorants: 0
✅ Denatured Alcohol: 0
✅ Animal ingredients: 0
✅ Old specified ingredients: 0
✅Phototoxic substances: 0

Safety of ingredients used

Non-nano zinc oxide : Particles over 100 nm in diameter do not penetrate the skin
Non-nano titanium dioxide : Treated to inhibit photocatalytic reaction
Water-based : soap-removable, friction-free

Innovative Features

Non-sticky and natural finish
Safe for all ages and skin types
Can be easily removed with soap
marine environment protection

Protects your skin while being environmentally friendly.
It is a reliable companion that protects the earth we live on while also protecting your skin.

Serum type additive-free sunscreen that can be removed with soap TAEKO SPF50

A coral-friendly, additive-free SPF50/PA++++ sunscreen. No UV absorbers or surfactants used. A skin-friendly sunscreen that can be used by sensitive skin and children.

"Defense Base" Theory: The Scientific Basis of the Vaseline Barrier

If you think Vaseline doesn't contain any beauty ingredients, please read the following carefully to the end before complaining to me.

Additive-free Vaseline New Sensitive Shield for atopic dermatitis and sensitive skin

Just take an appropriate amount and apply. Additive-free formula that can also be used around the eyes. It can be used by any skin type. Made with high-purity white petrolatum, it spreads and is not sticky.

Molecular structural advantages of high-purity petrolatum

High-purity white petrolatum is an extremely stable substance composed only of saturated hydrocarbons. Because there are almost no double bonds within the molecule, it is resistant to autoxidation caused by ultraviolet rays and oxygen, and can maintain a stable barrier function for a long time .

Dispelling a common misconception: Vaseline = gasoline is a complete lie ❌

Some people say that "Vaseline is the same as applying gasoline," but this is a misunderstanding that comes from people who don't fully understand the structure of its ingredients.

It is true that Vaseline is made from petroleum. However, petroleum is a natural substance that exists in nature as a fossil fuel. It is refined to a high purity level to medical grade :

Achieves a stable structure that is resistant to oxidation
Achieves zero skin irritation
Over 100 years of proven safety in clinical settings

In fact, even if they are both derived from petroleum, they can become completely different substances depending on the degree of refinement. Gasoline is low-refined and contains many impurities, but medical-grade Vaseline is made from saturated hydrocarbons refined to a purity of over 99.9%. In other words, there is no need to worry about spoilage or oxidation .

By the way, white petrolatum is the only ointment on the planet that can be applied to protect severely burned skin, so you can be sure that it is of consistent quality.

Mechanism of the physical barrier effect

The molecular engineering design of the AB Sensitive Shield we sell

Molecular weight : Relatively large at approximately 300-500, it forms a uniform protective film on the skin surface
Impurity level : 0.001% or less (1/1000th the purity of commercially available products)
Photostability index : No change in molecular structure even after 100 hours of UV exposure

Three important functions of this membrane
✅Prevents moisture loss : Prevents over 98% of moisture loss ✅Physical barrier : Physically blocks the penetration of external irritants ✅Promotes healing : Promotes the skin's natural healing process

A recent trend is to nano-size beauty ingredients to allow them to penetrate deeper into the skin, but cosmetics do not exist in nature and are therefore all foreign substances to the skin.

I believe that putting substances that are particularly prone to oxidation on the skin is extremely dangerous. The body's detoxification reaction may temporarily improve the skin's appearance.

However, if this condition continues for a long time, it is easy to imagine that the detoxification function will eventually reach its limit, resulting in blemishes and wrinkles.

When it comes to long-term skin health, isn't it important to respect the skin's natural barrier function and not be swayed by trends?

High biocompatibility

Petrolatum is chemically inert and does not affect the pH or bacterial balance of the skin.

The risk of allergic reactions and contact dermatitis is extremely low, making it safe for use by everyone from newborns to the elderly .

The decisive difference from commercially available Vaseline

AB Sensitive Shield vs. Commercial Vaseline

item	AB Sensitive Shield	Commercially available petrolatum
purity	100% high-purity white petrolatum	Industrial grade, impurities 1-5%
light safety	Zero risk of phototoxicity and photosensitivity	There is a risk of oil burning due to oxidation
Usage time	Completely safe for daytime use	Usage time limit recommended
Medical Grade	Medical institution use level	General industrial grade

The scientific explanation for the urban legend of "oil burn"

Many people are unaware that high-purity white petrolatum is composed only of saturated hydrocarbons, so there is no risk of oil burn. In fact, the risk of oxidation is much lower than that of commercially available whitening creams and whitening serums .

What you should be careful of are over-the-counter whitening products, which:

Contains beauty ingredients that are easily oxidized (such as vitamin C and tranexamic acid)
Chronic inflammation risk due to preservatives and surfactants
Possibility of causing carbonation (yellowing and dullness of skin, enlarged pores)

Dermatological Facts: In over 100 years of clinical use, there have been no reported cases of oil burns caused by high-purity petrolatum . This high level of safety is the reason why it continues to be used in medical institutions around the world.

The " protection" that I advocateThe "foundational" approach is theoretically supported by dermatology.

Did you understand?

Additive-free Vaseline New Sensitive Shield for atopic dermatitis and sensitive skin

8-step morning skincare routine! Perfect UV protection for sensitive skin!

Now, let's finally explain in detail some practical skin care methods.

Step 1: Gentle cleanse (time required: 2 minutes)

The importance of temperature setting: Lukewarm water at around 30 degrees Celsius does not remove excess sebum and prevents inflammation caused by vasodilation. This temperature is close to the surface temperature of the skin and is the least irritating setting.

The scientific basis for choosing soap

Chamomile soap : Anti-inflammatory effect from chamomileside, soothing effect from apigenin
Honey soap : Natural antibacterial, moisturizing, and pH-regulating properties

Foaming Technology Details: Foam that doesn't fall off even when you turn your palm upside down is proof that the interfacial tension has been sufficiently reduced. Foam in this state can efficiently remove dirt with minimal friction. Press the foam into your skin to absorb it, and once it has firmly adhered to your skin, gently use small circular movements to make sure it adheres to the dirt before rinsing.

Why can we proudly say that the soaps sold at Kokage Shoten are safe even for those with extremely sensitive skin?

This is because all of the soaps we sell are made using the traditional kettle-cooking method by artisans, rather than the more common "cold process" method that emphasizes efficiency.

The advantages of the kettle cooking method

1. Ultimate safety through complete saponification

By slowly reacting oils and alkali with heat, they are completely saponified (turned into soap) . This means that no unreacted alkali remains, which can irritate the skin, making it safe for even the most sensitive skin .

This safety is possible only because of the careful, time-consuming manufacturing process, which cannot be achieved with mass-produced soap made using the cold process method.

②The ideal balance of cleansing and moisturizing power

The kettle-cooking method produces natural glycerin , which remains in the soap. This natural glycerin maintains the soap's cleansing power while providing adequate moisture to the skin , preventing a tight feeling after washing.

It gently targets skin damaged by the harsh UV rays of summer, starting from the cleansing stage.

3. Essential oil ingredients and herbs can be blended at the optimal timing

The heating process allows essential oils and herbs to be blended at the most effective time.

And it is this handwork that produces unparalleled quality.

Skin-friendly handmade chamomile soap 60g SORRY KOUBOU

A handmade soap that is gentle on the skin and contains plenty of Hokkaido chamomile. Recommended for rough skin, acne, and scalp eczema.

Handmade honey soap made with Hokkaido ingredients 60g SORRY KOUBOU

This honey soap is made by hand using the pot-daki method, using only Hokkaido-produced ingredients. Tested for Clostridium botulinum and can be used on the whole body. Can also be used as a shampoo bar.

[Our Original] For those with scalp problems! Made with rare ingredients from Hokkaido! Botanical Shampoo Bar 60g

Step 2: Ideal Moisture Retention (Time Required: 1 Minute)

When your face is wet after washing, the stratum corneum is open, so sprinkle Avène thermal spring water on it.

Moisture Cushion Theory: By creating a layer of moisture on the skin surface, the subsequent application of petrolatum can be more easily spread, forming a thinner, more even film, maximizing the protective effect while reducing stickiness.

Why choose Avène Water?

Avène Water is a natural spring water with a special composition containing sulfates and silica, which promotes the repair of the skin's barrier function. With an alkaline pH of 7.5, it has the effect of neutralizing inflamed and acidic skin .

The importance of mineral balance

Sulfate ions : Anti-inflammatory effect, promotes blood circulation
Silica : Promotes collagen synthesis and moisturizes
Bicarbonate ions : pH adjustment, keratin softening

Rather than simply using "natural spring water," it is important to choose hot spring water, which has a mineral composition that is effective for skin repair and is slightly alkaline.

We do not sell this product in our store, so please purchase it at your nearest Shiseido counter. (Counterfeit products are also rampant. Beware of products that are obviously too cheap. Please purchase from an authorized Shiseido counter.)

Step 3: Intensive barrier strengthening for dry areas (Time required: 3 minutes)

For dry/combination skin: Apply JHB Beeswax Moisturizing Balm before AB Sensitive Shield

For areas that tend to be dry even in summer, apply a thin layer of JHB Beeswax Moisturizing Balm before AB Sensitive Shield, then apply a protective layer of Vaseline on top.

[Large-capacity version now available] Made with beeswax from rare Japanese honeybees in virgin forests, this balm is full of natural moisture! JHB Beeswax Moisturizing Balm 60g

● Made with beeswax from rare Japanese honeybees grown in virgin forests: JHB Beeswax Moisturizing Balm 60g

This product uses beeswax from the Japanese honeybee, a natural, original species .

This extremely rare natural wax is collected from wild Japanese honeybees nesting in the "Mogusaen" virgin forest, which has remained untouched for over 100 years. It is refined to the same level as cosmetics and then blended into our products.

Japanese honeybees vs. European honeybees: The crucial differences

Features	Japanese honeybee (Apis nipponica)	European honeybee (farmed species)
Habitat	Primeval forest/wild environment	Artificial bee farm
nectar plant	Hundreds of wild plants	Limited cultivated plants
Nutrient Density of Beeswax	Extremely high concentration	standard
Rarity	Annual amount collected is extremely small	industrial mass production
Antibacterial and anti-inflammatory ingredients	Abundant wild-sourced active substances	limited

● Special nutritional components of original Japanese honeybee beeswax

✨Flavonoid complex : derived from over 100 types of wild plants✨Propolis -like active substances : powerful anti-inflammatory and antibacterial effects✨Natural vitamin E group : antioxidant power 3-5 times stronger than cultivated species✨Mineral complex : trace elements derived from virgin forest soil✨Natural enzymes : promotes skin metabolism and repair functions

The secret to its rich nutrition that farmed European honeybees don't have

The power of diversity : Beeswax collected from hundreds of wild plants in primary forests has a nutrient density unmatched by monocultures
Stress-free environment : Japanese honeybees nest naturally in the wild, and are free from the stress inherent in farming, producing higher quality beeswax.
Adapts to seasonal changes : Japanese honeybee beeswax has adapted to the changing seasons and is flexible enough to respond to seasonal changes in the skin.

● Properties at the molecular level

Molecular structural advantages of Japanese beeswax

Molecular weight approximately 800-1200 : Moderate permeability penetrates deep into the skin
Complex ester structure : Long-lasting moisturizing effect
Natural antioxidant barrier : Protects against UV-induced oxidative stress

● The scientific meaning of layering

The mutually complementary system of beeswax and petrolatum

Japanese beeswax and petrolatum have different molecular structures, which provide complementary protective effects :

🍯The role of beeswax :

Maintains skin flexibility
Promotes penetration of nutrients
Anti-inflammatory and antibacterial barrier formation

🛡️ What Vaseline does :

Outermost layer of physical protection
Completely prevents moisture evaporation
Blocking external stimuli

Completing a dual-layer defense system This combination creates an ideal barrier system that provides nutrition from the inside and protection from the outside , allowing even the most sensitive skin to safely cope with the harsh summer environment.

Consideration for scarcity: Only a very small amount of beeswax can be collected from Japanese honeybees in virgin forests each year, so please use this precious natural gift with care. A single application of an amount about the size of a grain of rice will be effective.

[Large-capacity version now available] Made with beeswax from rare Japanese honeybees in virgin forests, this balm is full of natural moisture! JHB Beeswax Moisturizing Balm 60g

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Step 4: Form a high-purity petrolatum barrier (Time required: 5 minutes)

AB Sensitive Shield (high-purity petrolatum) is applied in an ultra-thin film to the surface.

Scientifically proven: Just the right amount, the size of a grain of rice (approximately 0.02g), creates an ideal protective layer 2 micrometers thick over the entire face

Coating Technology

Take it in your palm and rub it in with both hands.
Apply to the entire face with the image of "pressing"
Zero friction is the golden rule
Too much will cause UV damage during the day

Effect at this stage: Complete physical barrier against air pollution, pollen, and dryness

Additive-free Vaseline New Sensitive Shield for atopic dermatitis and sensitive skin

Step 5: Let the Vaseline soak in (Time required: 5 minutes)

Leave it for 5 minutes to allow the Vaseline to fully absorb into your skin

Physicochemical meaning of the 5-minute wait

Molecular rearrangement: Achieving optimal alignment at skin temperature
Interfacial tension stabilization: Prevents layer separation with the next UV agent
It's ready when the surface becomes moist and smooth.

How to make the most of this time: Do squats and massage your neck and scalp to improve blood circulation! (Don't massage your face directly!)

Step 6: Truly Safe UV Protection (Time Required: 4 minutes)

Apply TAEKO additive-free sunscreen (SPF50/PA++++) evenly.

Two-step application method

1st time : Spread on the palm of your hand and press it all over.
2nd application : Apply multiple coats to high points (bridge of nose, cheeks) using your fingers.

The effects of Vaseline primer

It spreads smoothly and easily
Greatly reduces the burden on the skin
Improved adhesion maximizes UV protection

Serum type additive-free sunscreen that can be removed with soap TAEKO SPF50

A coral-friendly, additive-free SPF50/PA++++ sunscreen. No UV absorbers or surfactants used. A skin-friendly sunscreen that can be used by sensitive skin and children.

Step 7: Makeup Combination Technique (Time Required: 2 minutes)

After UV protection, be sure to leave it on for 10 minutes before applying makeup.

The chemical basis for the 10-minute interval is that this is the time required for the UV scattering agent particles to form an optimal arrangement.

And for makeup, a light layer of powder is all you need.

Suitable for different skin types

Combination/oily skin : wipe off only on the T-zone with a tissue
Daytime makeup touch- up: Use powder with UV protection

Suitable for outdoor leisure activities

Added UV powder containing zinc oxide

It further enhances the physical scattering effect and prevents loss due to sweat.

Follow these steps:

After completing the basic 8 steps
Lightly press the zinc oxide powder with a puff
Apply powder every 2-3 hours

Step 8: Repainting strategy (individualized response)

How often do you reapply makeup if you don't use it?

Reapplication every two hours places a strain on the skin : For sensitive skin, the standard recommendation of "every two hours" can be excessively irritating. It is important to take into account the individual's sweat rate, activity level, and environmental factors.

When exercising or sweating : Use Avène water to loosen sweat and excess sebum, then wipe with a tissue and reapply sunscreen.

Office work : Reapplying once after lunch is sufficient

Frequently asked questions and misconceptions

Q1: Does Vaseline clog pores?

Scientific Answer: Vaseline has a comedogenic index of 0 (the lowest possible value on a 5-point scale). Due to its large molecular weight, it does not penetrate pores and only acts as a surface protector. Pore clogging is more likely caused by:

Accumulation of dirt due to improper washing
Abnormal sebum secretion caused by synthetic surfactants
Inflammation around the pores caused by chemical ingredients

With proper skin care and lifestyle habits, clogged pores will not occur.

Q2: Is it really safe to use beeswax during the day?

As a scientific verification of phototoxicity and photosensitivity , phototoxicity tests on beeswax have not reported any clinically significant reactions.

Because molecular structure:

Aromatic compounds free
Light absorption spectrum is within the safe range
Extremely low reactive oxygen generation capacity

Instead, you should pay more attention to the easily oxidized ingredients contained in the UV products and whitening cosmetics you are currently using.

Q3: Does the SPF value really decrease?

Physical Interaction Details: A thick layer of Vaseline can disrupt the alignment of UV scattering particles, theoretically reducing the SPF value. However, with an adequate thin film (less than 2 micrometers), this effect is negligible. That's why we always warn against applying too much Vaseline.

If you apply too much, blot it off with tissue and then apply UV protection on top.

Also, there is the issue of UV standard values.

Physical Interaction Details: A thick layer of petrolatum can disrupt the alignment of UV scattering particles, theoretically reducing the SPF value. However, with an adequate thin film (less than 2 micrometers), this effect is negligible.

That's why we strongly advise against using too much Vaseline.

What to do if you apply too much: If you apply too much, lightly wipe it off with a tissue and then apply UV protection on top. The appropriate amount is enough to make your skin slightly cloudy when you touch it to the mirror.

What is the rather serious "UV standard value problem"?

The pitfalls of SPF labeling: A huge gap between actual usage and actual SPF

In fact, the general reduction in protection due to insufficient use is a much more serious problem than the reduction in SPF caused by Vaseline.

Official Standard for Measuring SPF

Measurement standard amount : 2 mg per square centimeter
Whole face equivalent : Approx. 0.8-1.0g (500 yen coin size x 2 applications)
Actual usage : Most people only use about 1/4-1/3 of the recommended amount.

The shocking fact is that even if you use an SPF 50 sunscreen, at typical usage levels (25-50% of the recommended amount), you are only actually getting the protection of an SPF 5-10 !

Actual benefits of using Vaseline primer

Improved spreadability : Vaseline makes it easier to apply UV agents evenly without friction
Enhanced adhesion : Thin film of petrolatum promotes adhesion of UV agent
Improved durability : Prevents loss due to sweat or friction

In other words, many people are not using enough. In particular, if you apply a UV product on top of a full skincare routine that includes lotion, serum, emulsion, and primer, you may find that rough, solid particles appear on your skin, or your skin may crack when you laugh. It can be difficult to apply the right amount of UV product. Try to focus on subtracting rather than adding too much.

Summary: Whoever controls summer controls beautiful skin

Just because you have super sensitive skin doesn't mean you have to give up on beautiful skin.

With the right knowledge and the right product selection, you can transform sunscreen from a "blemish-making machine" into a "powerful ally for beautiful skin."

At Kokako Shoten, we are committed to supporting you in your quest for healthy, beautiful skin. We will continue to provide truly safe and effective products made with the skill of Japanese artisans, even to those living overseas.

This summer, get the best skin possible with truly safe UV protection!

Hopefully your sunscreen isn't a spot-making machine.

We sincerely hope that as many people as possible can maintain beautiful skin with scientific and practical summer skincare.