Product Description
Due to its heightened porosity, processed hair absorbs three times more calcium from water as compared to untreated hair, resulting in calcium overdose, both internally and externally within the hair shaft. The Kérastase Sérum Filler Fondamental Hair Serum provides a dual-action solution: its lightweight, balm-like texture seals the cuticles, safeguarding the hair's surface, while simultaneously replenishing the fibre and reinforcing hair strength. This protects your hair from the damaging effects of calcium found in hard water, as well as from humidity and heat up to 230°C. Say goodbye to damage & frizz as your hair becomes smooth, supple, easy to style and effortlessly manageable.
For even more care for your bleached or damaged hair, combine with the rest of the Première range. Try the maximum power of the layering technique: Start with the pre-shampoo treatment, Kérastase Concentré Décalcifiant Ultra-Réparateur, then without rinsing off the Concentré, use the shampoo, Kérastase Bain Décalcifiant Réparateur on top. Follow with the conditioner or mask before applying Kérastase Sérum Filler Fondamental as a final repair step.
For enhanced care of your bleached or damaged hair, complement it with the other products from the Première range. Experience the full potential of the layering technique: Begin with the pre-shampoo treatment, Kérastase Concentré Décalcifiant Ultra-Réparateur. Next, without rinsing the Concentré, apply the Kérastase Bain Décalcifiant Réparateur . Follow this up with the Masque Filler Réparateur Hair Mask and conclude with Sérum Filler Fondamental Hair Serum as the final repairing step.
Bottle made of 95% recycled plastic*
*excluding cap, colorant, and additive
Country Of Origin:- Spain.
Manufacturer & Packer Name and Address:- L’Oréal S.A, Productos Capilares, Calle López Bravo, 78, Polígono Industrial Villalonquéjar, 09001 Burgos, Spain.
Importer name and Address:- L'Oréal India Pvt Ltd, A Wing, 8th Floor, Marathon Futurex, N M Joshi Marg, Lower Parel, Mumbai, India, 400013.
100 ml - Expiry - November 2025
30 ml - Expiry - May 2025
Key Words
Repairing – Strengthening – Remove Calcium – Damaged Hair
![Image](https://www.kerastase.in/on/demandware.static/-/Sites-kerastase-in-ng-Library/en_IN/dwa3ba9b6a/image/pdp/KER_00281/00281-heat-protection.png)
Heat Protection
![Image](https://www.kerastase.in/on/demandware.static/-/Sites-kerastase-in-ng-Library/en_IN/dw45cb870c/image/pdp/KER_00281/Anti-Frizz-00281.png)
Anti-Frizz
![Image](https://www.kerastase.in/on/demandware.static/-/Sites-kerastase-in-ng-Library/en_IN/dwf9a9f9c1/image/pdp/KER_00281/3kerastase-feel-benefits-smooth-hair.png)
Smooth Hair
![](https://www.kerastase.in/dw/image/v2/BJSQ_PRD/on/demandware.static/-/Sites-kerastase-in-ng-Library/en_IN/dw89d3239b/image/pdp/KER_00281/Serum/Premiere%20-%20Perfect%20Execution%20-%20INTERx2000.jpg?sw=418&q=80)
Product Benefits
✔ Hair is protected from heat, up to 230°C*
✔ Fights humidity
✔ Provides deep nourishment
✔ Eliminates frizz
✔ Reveals softer and smoother hair
✔ THERMOPROTECTION 230°C*
✔ 2X LESS SPLITENDS**
**Instrumental test after 1 application of the serum
Step 1:
Apply the repairing anti-frizz hair serum on towel-dried hair..
Step 2:
Gently distribute the serum evenly, focusing on the mid-lengths and ends.
Step 3:
Leave-In. Blow-dry and style as usual.
Key Ingredients
![](https://www.kerastase.in/dw/image/v2/BJSQ_PRD/on/demandware.static/-/Sites-kerastase-in-ng-Library/en_IN/dw3b04aa2c/image/pdp/KER_00280/Mask/peptide-00281.jpg?q=80)
Peptide
![](https://www.kerastase.in/dw/image/v2/BJSQ_PRD/on/demandware.static/-/Sites-kerastase-in-ng-Library/en_IN/dwf15aa921/image/pdp/KER_00280/Mask/glycine00281.jpg?q=80)
Glycine
![](https://www.kerastase.in/dw/image/v2/BJSQ_PRD/on/demandware.static/-/Sites-kerastase-in-ng-Library/en_IN/dw9c92535b/image/pdp/KER_00281/Serum/PREMIERE%20HOVIG%20-%20Quotes%20-%20Perfect%20Executionx2000w.jpg?sw=418&q=80)
How To Dramatically Reverse Persistent Damage?
Kérastase discovered the reason behind damage that keeps coming back: CALCIUM!
3x
More calcium is absorbed with damaged hair as it is more porous (vs healthy hair), leading to a calcium overdose
PERSISTENT
Damage happens when calcium sneaks in-between keratin chains, breaking their links, making hair rigid, stiff and easy to break
BUILD-UP
Of calcium on the outside makes hair rough and dull
Pure Acids Concentration
Free hair from calcium overdose with citric acid, an organic acid that acts from core to surface, to neutralize dullness and stiffness. Once calcium is removed, Glycine, an amino acid, penetrates hair's inner layer to deeply repair. As a results broken links between keratin chains are reconnected, dramatically reducing breakage.
![](https://www.kerastase.in/dw/image/v2/BJSQ_PRD/on/demandware.static/-/Sites-kerastase-in-ng-Library/en_IN/dw8b2735b8/image/pdp/KER_00281/Serum/00280-Scent.jpg?sw=418&q=80)
Frequently Asked Questions
Answers to Your Frequently Asked Questions