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Ever since we watched the first season of “Gossip Girl,” we’ve been huge fans of Blake Lively’s flowing waves. So we were excited to learn that the blonde actress was the inspiration behind Kérastase’s new serum. Specially designed for long hair, the leave-in treatment adds a high-definition shine while sealing each cuticle (bye bye, split ends). Plus, the light, gorgeously scented formula won’t weigh down your strands.
I loved this product but will not be purchasing it.5
This product did not make any notable impact on my hair. I felt like the serum was a bit thinner than other products I use. I also did not notice any added shine to my hair, nor any contribution to hair frizz. I would not recommend this product for curly/ dry hair.3
I was really surprised by how effective this product is, considering it has such a thin feel. It left my thick curly hair feeling bouncy, and lightweight, but with shine and form. Will definitely be purchasing in the future.5
I have very fine, straight hair, and so this product wasn't quite lightweight enough to make my hair look shiny and frizz-free, instead making it look just kind of oily.4
This was definitely a smoothing product that added a bit of shine. Also did a nice job of hiding split ends!4
I keep my hair very short so it is cut quite often. Because of this, I really don't have a need for a hair serum. I do color my hair, but it is very healthy. My hair is also fine, so a product like this would most likely weigh it down.3
I liked the way my hair looked after using the product. It is pretry pricey so I won't buy it right away.5
Pretty impressed with this product. I usually use oils because serums are a bit too greasy, but this one wasn't bad.5
I have fine, long hair. I don't have a major problem with frizz, but love adding volume and shine to my hair (in general, I have better luck with two separate products for that). This was great at getting rid of frizz and leaving my hair very soft. It was good at adding shine, but I have other products that are better. It didn't leave my hair flat, but I'm not sure that it's my favorite defrizzer4
I have very curly hair, which I straighten - and this serum did a wonderful job smoothing frizz. It was a little denser than serums I prefer to use, but the finished product was fantastic!4