Kérastase Sérum Filler Fondamental Hair Serum 90 ml
Beauty, backed by expertise
Used daily by our estheticians and stylists across 5 beauty & wellness centres
Free shipping across Canada over $100
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A lightweight, heat-protecting leave-in serum that repairs porous, damaged hair while smoothing frizz and restoring a glossy, supple finish. Powered by Kérastase’s dual-action technology, it helps reinforce the hair fiber from within while sealing the cuticle to reduce porosity and protect against humidity and calcium buildup.
Benefits
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Helps repair porous, damaged hair and reinforce fiber strength
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Smooths frizz for up to 72 hours
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Reduces porosity and helps protect against calcium buildup
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Provides heat protection up to 230°C (450°F)
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Leaves hair up to 3x smoother, 2x softer and 99% stronger*
Key Ingredients
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Glycine: An amino acid that penetrates the hair fiber to help repair internal damage and reinforce strength.
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Peptides: Help replenish the hair’s surface for a smoother, more refined finish.
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Citric Acid: Helps remove excess calcium buildup and reduce dullness and stiffness.
Fragrance
A luminous citrus fragrance opens with vibrant mandarin, followed by delicate orange blossom and jasmine, settling into rich, subtle woody notes inspired by a summer escape to Portofino.
How to Use
Apply to towel-dried hair, concentrating on lengths and ends. Leave in and blow-dry before styling. For optimal results, use as the final step in the Kérastase Première routine, following the Concentré Ultra-Réparateur, Bain Décalcifiant Réparateur and Mask Filler Réparateur.
Instrumental test.
