Anti-Damage
Sérum Filler Fondamental
A lightweight heat protecting leave-in hair serum for porous damaged hair.
90 ml
FIND YOUR NEAREST SALON
THE PREMIÈRE DUAL-ACTION RITUAL TO REPAIR FIBER POROSITY.
Kérastase Première Sérum Filler Fondamental is a lightweight leave-in treatment for the inner repair of all types of porous damaged hair, leaving it glossy and supple.
The Porosity Problem: Damaged hair acts like a sponge, absorbing 3x more calcium from hard water. This "overdose" makes the fiber stiff, brittle, and perpetually frizzy.
Dual-Action Repair: This serum fills the fiber to reinforce internal strength while sealing the cuticles to neutralize porosity.
Total Protection: By closing the hair scales, it creates a shield against calcium buildup, humidity, and heat up to 230°C.
The Results: Frizz is eliminated for 72 hours*, leaving hair glossy, supple, and perfectly protected. For maximum results, use as the final sealing step after the Première Concentré Ultra Réparateur, Bain Décalcifiant Réparateur, and Mask Filler Réparateur.
*72H ANTI-FRIZZ - Instrumental test
KEY WORDS:
BENEFITS
3X SMOOTHER*
2X SOFTER*
99% STRONGER HAIR*
INFUSED WITH 10 MILLION OF AMINO-ACID MOLECULES
TO REPAIR YOUR HAIR INSTANTLY **
*Instrumental Test
**Glycine molecules
HOW TO USE
Before the end, protect against breakage for porous damaged hair. This system deeply repairs the hair from the inner layer and strengthens the hair for lasting results.
Step 1: Apply on towel-dried hair
Step 2: Leave-In
Step 3: Blow-dry and style
KEY INGREDIENTS
 |
Peptide A chain of amino acids that refills hair surface with matter. |
 |
Glycine Once calcium is removed, this amino acid penetrates hair's inner layer to deeply repair. |
FULL INGREDIENT LIST
AQUA / WATER / EAU • ISOPROPYL MYRISTATE • DIMETHICONE • TRIETHANOLAMINE • AMODIMETHICONE • PARFUM / FRAGRANCE • PHENOXYETHANOL • CARBOMER • POLYQUATERNIUM-4 • POTATO STARCH MODIFIED • LIMONENE • HYDROXYPROPYL GUAR • BEHENTRIMONIUM CHLORIDE • HYDROLYZED VEGETABLE PROTEIN PG-PROPYL SILANETRIOL • GLYCINE • TRIDECETH-6 • ISOPROPYL ALCOHOL • LINALOOL • CETRIMONIUM CHLORIDE • CITRAL • COUMARIN • BENZYL SALICYLATE • SODIUM BENZOATE • BENZYL ALCOHOL • CITRONELLOL • ALPHA-ISOMETHYL IONONE • POTASSIUM SORBATE • GERANIOL
HOW TO DRAMATICALLY REVERSE PERSISTENT DAMAGE?
Kérastase discovered the reason behind damage that keeps coming back: CALCIUM!
Damaged hair is porous and absorbs 3 times more calcium from water (vs healthy hair) leading to a calcium overdose.
At each contact with water, calcium accumulates creating persistent damage. Calcium sneaks in-between keratin chains, and breaks their links, making hair rigid, stiff and easy to break.
On the outside, calcium builds-up, on the scales, making hair rough and dull.
8% PURE ACIDS CONCENTRATION
Free hair from calcium overdose with Citric Acid, an organic acid that acts from core to surface, to neutralise dullness and stiffness. Once calcium is removed, Glycine, an amino acid, penetrates hair's inner layer to deeply repair. As a result, broken links between keratin chains are reconnected, dramatically reducing breakage.
PORTOFINO SUMMER
This luminous creation reveals the sensuality of a vibrant mandarin. The Fragrance unveils a citrus & mandarin cocktail surrounded by an accord of orange flower and jasmine. It creates a true summer nectar sending you directly to Italy.
Frequently Asked Questions
COMPLETE YOUR ROUTINE
At Kérastase, we believe in the power of a complete haircare routine. Discover the products of this range and maximize your results!
My hair is
Bain Décalcifiant Réparateur Shampoo
A sulfate-free formula that gently cleanses scalp and hair for all types of dama...
Fondant Fluidité Réparateur Conditioner
A repairing, decalcifying, softening conditioner for damaged hair. It ...
Masque Filler Réparateur Mask
Repairing mask that protects against breakage for porous damaged hair.
Sérum Filler Fondamental
A lightweight heat protecting leave-in hair serum for porous damaged hair.
Huile Gloss Réparatrice Hair Oil
Shine intensifying repairing oil for damaged hair.
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