Kérastase Première Anti-Frizz Reparative Filler Serum is a lightweight leave-in treatment designed to repair damaged hair, smooth frizz and strengthen weakened fibre caused by calcium build-up from hard water and repeated styling stress.

Formulated with Peptide Repair technology and advanced conditioning agents, this serum helps restore hair structure, improve smoothness and protect against humidity. It reinforces hair strength while leaving lengths soft, glossy and easier to manage without heaviness.

Ideal for damaged, over-processed or frizz-prone hair needing repair and protection.

Key Benefits

• Helps repair weakened hair fibre
• Reduces frizz and improves smoothness
• Protects against humidity and styling stress
• Strengthens hair affected by hard water damage
• Leaves hair softer, shinier and easier to manage
• Lightweight leave-in formula suitable for daily use

How to Use

Apply 2–4 pumps to towel-dried lengths and ends.
Do not rinse.
Blow-dry or style as desired.

For best results, use as the final step in the Kérastase Première routine.

Laura loves this product because it delivers visible smoothness and strength while protecting hair from everyday damage and humidity.