Kerastase Paris Premiere Anti-Frizz Reparative Filler Serum for Damaged Hair (3.04 oz) - The ultimate shield against frizz and breakage

Battling frizz and breakage? The issue might not be your routine—it might be the water you shower with. Introducing the Kérastase Première Sérum Filler Fondamental, a revolutionary repairing anti-frizz serum that targets the root cause of persistent damage: calcium overdose. When hair is damaged or bleached, it becomes porous and absorbs three times more calcium from hard water, leading to a rigid, brittle, and perpetually frizzy fiber. This feather-light, leave-in serum is the essential final step in the Première decalcifying ritual, actively working to neutralize damaging calcium deposits and restore your hair’s original strength.

This is a dual-action filler serum that delivers next-level repair, formulated with a potent concentration of Peptides and Amino Acid Glycine. First, the lightweight, balmy texture creates a smooth, protective shield that instantly seals the hair’s surface and protects it from heat damage up to 450°F (230°C). Then, the Peptides and Glycine dive deep to penetrate the inner layer of the hair fiber, refilling the core and reconnecting broken keratin links that cause breakage, resulting in hair that is 99% stronger and dramatically softer to the touch. It’s an internal reconstruction and external perfection all in one elegant bottle.

More than just a smoothing serum, the Première Sérum is your 72-hour defense against humidity and frizz, ensuring your style stays sleek and polished regardless of the weather. By repelling humidity and locking out frizz, the product leaves hair up to 3x smoother with a lightweight, non-greasy finish that never weighs down the strand. Suitable for all damaged hair types, this repairing filler is the secret to turning that old straw bird's nest of a mane into luminous, supple, and effortlessly manageable hair—it’s like getting a protective top coat for your hair after every wash.