I had the opportunity to test the Kérastase Première Sérum Filler Fondamental, and unfortunately, the product did not live up to my expectations. Even though it is marketed as a smoothing and moisturizing serum, I did not experience any noticeable improvement in frizz or texture.
I normally have thick hair with a lot of volume, and I hoped the serum would provide a more controlled, soft, and manageable feel. Instead, my hair became both sticky and dry, and the frizz remained unchanged. The product also did not provide any lightness or shine, which made my hair feel heavy yet still coarse at the same time.
In summary, the Kérastase Première Sérum Filler Fondamental unfortunately did not work for my hair type. It provided neither the smooth finish nor the moisture I expected, and therefore I would not purchase the product myself.
I am participating in a test panel and received a free test product.