Kérastase Première Sérum Filler Fondamental is a lightweight leave-in treatment for all damaged hair types.
Processed hair absorbs more calcium from water, which harms both the inside and outside of the hair. The serum protects against this by sealing the hair surface and strengthening it. It also shields against damage from hard water, humidity, and heat up to 230°C, reducing frizz and making styling easier.
For extra care for bleached or damaged hair, use other products from the Première range.
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