How to Care for Frizzy Hair and Sticky Scalp During the Rainy Season
During Japan's humid rainy season, hair absorbs moisture and tends to swell and become wavy, making it more prone to frizz. High humidity and temperatures can also increase oil and sweat production, leaving the scalp feeling oily and sometimes leading to odor.
To avoid these kinds of rainy-season hair troubles, it's important to revisit your everyday shampoo and treatment routine. Let's take a look at the essential hair care habits worth adopting during this season.
For Rainy-Season Hair Troubles… Start with Your Shampoo
Frizz during the rainy season ultimately comes down to damage to the cuticle, the outer surface layer of the hair. When the cuticle is lifted or damaged, moisture can seep in through the gaps, causing swelling and waviness — so the first step is restoring and smoothing the cuticle.
Shampoos with strong surfactants can damage not just the hair but the scalp as well, which is why we recommend KOTOSHINA's naturally derived shampoo, gentle on both hair and skin. Before shampooing, rinse your hair lightly with warm water to remove dust and wax buildup. Then massage your scalp with the fine, refreshing green-tea-scented lather to thoroughly cleanse the scalp.
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Shampoo Relax — Green Tea Scent
KOTOSHINA's shampoo is a silicone-free formula made with 99% naturally derived ingredients, including organic green tea and natural spa water from France.
Tea seed oil and cypress-derived plant ingredients (moisturizing components) help offset the squeaky texture often associated with silicone-free formulas, leaving hair easier to manage. Damask rose flower water also helps improve scalp circulation and support metabolism.
The Key to Rainy-Season Hair Care: Get Smooth, Shiny Hair with Treatment
Using a treatment is essential for smoothing the hair's cuticle.
Since hair ends tend to accumulate the most damage, focus the treatment mainly on the ends.
To avoid clogging pores, it's best to apply it mainly to the hair itself rather than the scalp.
After spreading it through your hair, let it sit for 3–5 minutes like a hair mask so the moisture can penetrate more deeply into the ends. Using a warm towel wrung out in hot water is also a great way to enhance the effect.
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Treatment Relax — Green Tea Scent
This is a silicone-free treatment generously formulated with moisturizing ingredients including tea seed oil, shea butter, and lavender oil.
By smoothing the cuticle and helping prevent excess moisture retention in the hair, it allows hair to dry faster and helps protect against heat damage from blow-drying.
It leaves hair feeling light, soft, and smooth, and is a popular choice among both men and women.
We also recommend our great-value big bottle sets.
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Shampoo Big Bottle Kit ＜Web & Kyoto Store Exclusive＞
It's easy to focus on hair oils and other extras beyond shampooing, but it's just as important to go back to the basics and revisit the shampoo and treatment routine you use every day.
With KOTOSHINA's shampoo and treatment, designed to bring out your hair's natural strength, let's nurture healthy hair that can stand up to the humidity of rainy season.
