What is the difference between those whose hair gets damaged after the summer and those whose hair does not?

「夏が終わると髪がボロボロになる人と、ならない人の差は?」
From Rainy Season to Summer. Essential Care for Protecting Hair and Scalp | KEMA
Summer hair care
Hair Care Column · 2025 Summer

From Rainy Season to Summer.
Essential care to protect
your hair and scalp.

Humidity, UV rays, and sweat—this season, your hair is exposed to damage that silently accumulates.
We explain "correct summer care" from KEMA’s perspective, combining science and sensation.

Rainy Season Humidity & Frizz UV Damage Scalp & Sweat Care Morning/Night Routine How to Choose Ingredients

As the air changes in June, your hair also enters a season of transformation.
Frizz at the mercy of humidity, intense UV rays, and scalp stress caused by summer sweat—
these are not "unavoidable" issues, but things you can truly change with the right approach.

Jun–Aug
Peak UV
Season
70%
UV penetration
even on cloudy days
38°C
Ideal water
temperature for shampoo
Humidity Impact — Seasonal Humidity and Hair Effects
Spring (Apr–May)45%
Rainy Season (Jun)78%
Summer (Jul–Aug)70%
Autumn (Sep–Oct)55%
Higher humidity makes cuticles easier to open, leading to more frizz and damage. Care is most critical from the rainy season through summer.

Basic strategy to suppress frizz

Dealing with frizz is about "smoothing the cuticle and preventing moisture intrusion." Post-shampoo care is especially important.

Bad Habits
  • Rubbing hair with a towel
  • Leaving hair to air-dry
  • Shampooing with hot water
  • Skipping combing
  • Going out without styling
The Correct Approach
  • Gently pressing water out with a towel
  • Drying immediately with a hairdryer
  • Washing with 38°C lukewarm water
  • Using rinse-off treatment is mandatory
  • Coating with oil before heading out

Frizz-fighting tips by hair type

Frizz appears differently depending on hair type. Fine hair tends to go limp in humidity, while thick hair becomes visibly voluminous. It is important to understand your hair type to select the appropriate approach.

For fine/soft hair: A lightweight milk-type treatment is recommended. Heavy oils can weigh hair down, so use a small amount only on the ends. To add volume while controlling frizz, the trick is to lift the roots with a hairdryer and use styling products only on the ends.

For thick/coarse hair: Coat the surface with a substantial oil or butter to physically block moisture. Styling products containing shea butter or argan oil are effective. When using a hairdryer, direct airflow from top to bottom to smooth the cuticle.

Styling techniques to embrace the frizz

Instead of just "eliminating" frizz, another option for the rainy season is to style it intentionally. By applying a styling cream with a wet finish and smoothing the waves in one direction, you can achieve a textured, effortless look. This also puts less stress on your hair than trying to force it to be poker-straight.

Checklist before going out in the rain
  • Applied leave-in treatment (oil or cream)
  • Dried hair completely from roots to tips with a hairdryer
  • Finished with a hair spray coating
  • Carried physical protective gear like a hat or scarf
  • Kept a styling mist for on-the-go touch-ups
✦
This Season's Checklist
  • I use leave-in treatment every morning
  • I switched to a shampoo designed for summer/scalp care
  • I bought hair UV spray and use it before going out
  • I have made weekly hair masks a habit
  • I use my hair dryer every night to ensure complete dryness
  • I make a habit of wearing a hat or scarf
✦

KEMA — Advanced · Quality · Oriented

This summer, true beauty is
forged by dedication to your hair.

From the rainy season to summer—view these seasonal changes as a turning point for your hair. Through consistent, proper care, your hair will transform into something strong and beautiful by autumn. KEMA is with you every step of the way.

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