La Phytothèque

Humidity SOS: Your Guide to Smoother, Frizz-Free Hair

You checked the temperature. But when it comes to your hair, humidity is the number worth watching. Why Humidity Makes Hair Frizz Healthy hair has a relatively smooth cuticle that helps maintain a polished appearance. But when hair is dry, damaged, or porous, it can absorb more moisture from the surrounding air. Hair is naturally hygroscopic, meaning it responds to changes in humidity by taking on moisture. As humidity rises, the hair fiber can swell and the cuticle becomes less smooth. The result is familiar: more frizz, less definition, and a blowout that doesn't quite look the same as it...

Why Does Blonde, Gray, or White Hair Turn Yellow?

Blonde, gray, and white hair can develop unwanted yellow or brassy tones over time. Discover why it happens and how violet pigments, botanical care, and antioxidant protection can help keep cool tones looking bright and luminous.

Phyto7 Elixir: Cream or Oil? Why Not Master Both.

Since 1968, one name has ruled dry hair: Phyto7. Created by Patrick Alès, celebrity hairstylist, it was the first leave-in day cream ever made for hair. In an era obsessed with chemistry, Phyto Paris did the unthinkable: built a formula that was 100% botanical. In 2026, the icon evolves. Phyto7 becomes Phyto7 Elixir still entirely plant-powered, now infused with 7 active botanical extracts and engineered for one mission: transform dry, damaged hair without ever weighing it down. Two formulas carry that mission forward. A cream. An oil. Both essential, both different, and knowing which one to reach for (or when to use...