You return from vacation with dry, dull, and rough hair, and an itchy scalp. The sun is the obvious culprit, but the mechanism is more precise than simple "drying out": what happens under UV rays is an oxidation reaction — of keratin, melanin, and especially sebum.
Care for this subject
See the range
What the sun really does to fiber
UV rays attack the sulfur bonds in keratin, the very bonds that give hair its strength and elasticity. At the same time, they degrade melanin, producing the desired lightening effect in summer—but leaving the hair fiber weakened and porous.
- The bonds in keratin weaken, the fiber becomes brittle
- Melanin breaks down, hair lightens and becomes dull
- Colored hair changes color more quickly due to a lack of protective pigment.
The "straw-like" effect at the end of summer isn't a matter of dryness. It's oxidation. You can't correct it by piling on nourishing masks; you correct it by providing antioxidants and starting with a healthy scalp.
The mechanism we often forget: sebum oxidation
Sebum contains squalene, a lipid that is particularly sensitive to UV rays. When exposed to sunlight, it oxidizes into peroxides that irritate the scalp. This explains the itching, redness, and dandruff that appear every summer in people who never experience them the rest of the year.
Signs of hair damaged by summer
You are probably affected if you observe several of these signs:
- Rough lengths and a "straw-like" feel appeared in just a few weeks
- A dull or faded color, on both colored and natural hair
- Unusual itching or dandruff since the holidays
- Split ends that break when detangling
- Uncontrollable frizz as soon as the air is humid
Verified review
"Incredible! I didn't really believe it, but it's true: by taking care of the roots, the ends follow. My hair is shiny, nourished, and the application is super easy. Very, very good product."
Chloé B., a customer for 2 years
Discover the solutionThe protocol for repairing after exposure
Repairing oxidized hair involves three steps. First, exfoliate the scalp to remove oxidized sebum, salt, and chlorine residue. Then, wash with an antioxidant shampoo at pH 5, which limits swelling of the already weakened hair fiber. Finally, nourish the lengths to rebuild the surface lipid film.
Anti-Oxidant Protocol
Comprehensive treatment that slows down hair aging
To remember
- The "straw-like" effect is oxidation, not dehydration.
- UV rays oxidize sebum into compounds that irritate the scalp.
- Vegetable oils do not protect against the sun: a hat, if
- Exfoliating, washing at pH 5 and nourishing repairs all three levels of damage
Start the consultation
Analyze your scalp, identify imbalances and discover a personalized scalp and hair care protocol.
- Free
- No commitment
- ≈ 4 minutes
