KERASTASE Première Serum Filler Fondamental 90ml

Anti-frizz leave-in repair serum for damaged hair.

What is it?
A next-generation, leave-in hair serum designed to repair, smooth, and protect damaged hair. Its creamy yet lightweight formula acts as an invisible shield against humidity, frizz, and heat styling up to 230°C .

Who is it suitable for?
Ideal for all types of damaged, porous or weakened hair , especially those affected by chemical treatments, heat tools or hard water with excess calcium .

What benefits does it offer?
This daily treatment is part of the Première range and offers visible results from the first application:

• 99% stronger hair , more resistant to breakage.

• 2 times softer and 3 times smoother , with a professional finish.

• Frizz control for 72 hours , even in humid environments.

• Effective thermal protection up to 230°C , ideal for frequent use of flat irons and hair dryers.

• Repairs and fills the hair fiber, leaving hair shiny, flexible and easy to comb.

Key Ingredients:

• Citric Acid : Helps remove excess minerals and neutralize calcium damage.

• Glycine : strengthens and restructures the hair fiber from the inside.

• Creamy-white texture , soft to the touch and quickly absorbed, leaving no residue or greasy feeling.

How is it applied?

1. Wash your hair with your treatment shampoo and towel dry.

2. Apply a small amount of serum to the lengths and ends , distributing evenly.

3. Do not rinse . Comb and dry as usual.

💡 Tip: For a complete repair routine, use alongside products from the Kérastase Première range, including Bain Décalcifiant , Concentré Ultra-Réparateur and Masque Filler Réparateur .

Why choose it?
Because it offers an advanced, sensorial solution for damaged hair: it repairs, protects, and beautifies without complications. All in a lightweight serum that smells incredible and transforms hair from the first use.