NEWS

The ASSORT Guide to Humidity-Proof Hair This Summer

Summer in Tokyo brings incredible energy, and unmatched humidity. High moisture levels in the air cause the hair shaft to swell unevenly, often turning soft waves into unwanted frizz.

Choosing the right anti-frizz treatment depends heavily on your hair history. Here is how the top salon solutions stack up for different hair profiles.


1. Japanese Hair Straightening: The Ultimate Permanent Shield

  • Best For: Unprocessed, naturally thick, coarse, or stubbornly frizzy hair that hasn’t been bleached.

  • Why It Works: By permanently realigning the internal bonds of your hair, Japanese Hair Straightening heat-seals the hair flat. Humidity physically cannot cause the strands to swell or wave, giving you pin-straight, glossy hair that resists sweat and rain until it grows out.

  • Avoid If: You have bleached, double-processed, or high-lift compromised hair, as the chemical strength can cause severe breakage.


2.Aujua Multi-Step Treatments: Personalized Frizz & Humidity Control

  • Best For: Anyone looking for tailored frizz control without chemical straightening, zero commitment, and no downtime.

  • Why It Works: Aujua uses a bespoke system to target the exact root cause of your frizz. At ASSORT, we feature all three of Aujua’s specialized anti-frizz lines:

    • Aquaveer: Best for natural waves/curls with uneven moisture distribution. It hydrates the inner cortex with moisture-balancing lipids so hair resists absorbing humid air.

    • Inmmetry: Best for hair with structural “distortion” or uneven waviness caused by combined heat or chemical damage. It smooths out individual strand kinks for a sleek, light-reflecting finish.

    • Miragery: Best if you are starting to notice severe frizz, loss of shape, and salon results that no longer feel as satisfying or long-lasting. Using 3D-CMADK keratin technology, Miragery restructures damaged, frizzy strands from deep within to restore a manageable, beautiful silhouette.

  • Avoid If: You want a permanent, pin-straight chemical transformation (Japanese Hair Straightening is better suited for that).

  • Bonus: All Aujua home-care product lines (shampoos, treatments, and leave-in serums) are available for purchase directly in our ASSORT salon so you can easily maintain your humidity protection between visits🌟


3. Tokio Inkarami Premium Treatment: Deep Repair for Damaged Hair

  • Best For: Color-treated, highlighted, or heat-damaged hair that becomes frizzy due to structural porosity.

  • Why It Works: Using patented fullerene and keratin-bonding technology, Tokio Inkarami reconstructs the hair from the inside out. While its main priority is strength and elasticity, sealing the cuticle reduces humidity-triggered swelling significantly.

  • Avoid If: Your hair is completely healthy and your only struggle is weather-induced humidity swelling (Aujua is a better targeted fit).


4. OLAPLEX & MARBB Carbon Spas: Supporting Players

  • OLAPLEX: Restores broken disulfide bonds in severely damaged or bleached hair. Essential for bond health, but works best when paired with an anti-humidity styling barrier.

  • MARBB Micro Bubble / Carbon Spas: Deep-cleanses the scalp, removing clogged sebum and summer sweat buildup. Excellent for overall scalp health, though it focuses on the roots rather than smoothing the lengths.


Not Sure Which Matches Your Hair History?

Hair history can be complex, especially if you have a mix of past highlights, color, or previous chemical treatments.

Our international team of bilingual stylists at ASSORT TOKYO is always happy to consult with you in detail before your appointment. During your consultation, we’ll assess your hair’s porosity, elasticity, and past chemical history to curate the exact treatment plan your hair needs to breeze through the humid months.

Book your consultation or treatment with us directly online

We look forward to seeing you in the salon!

© 2026 ASSORT GROUP