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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'm a frequent user of hair serums, so I was pleased to see this in my Birchbox!4
This product was effective and smelled great! But unfortunately weighed down my vet fine hair. I could see how this would work great for someone else.4
This serum is very nice! I like it and it is a good alternative for my usual serum!4
It's a decent hair serum, nothing revolutionary. It's a bit heavy to use all over on my curly hair, but does a good enough job of taming my ends.4
Since this was the "bonus" sample, it was very small. I only got two uses out of it; it did add shine to my hair but I didn't see a big difference with the frizz (I used on semi-rainy days though). I would have liked a few more uses to judge effectiveness.4
This product was all right. It smelled nice and wasn't heavy but didn't do much.4
Kérastase Cristalliste is an absolute must for any beauty cabinet. Although I would not use it on my roots, the lustre and softness it imparts on the ends of my hair - as well as it's soft fragrance - make it worth every penny!4
This was a nice lightweight serum that added a lot of shine to my hair. I preferably serum from a different brand though4
This stuff smells great and definitely adds shine to my hair, but I think the full size is just a bit too expensive. I'll stick with my drugstore serum for now.4
This was good but there are a lot of other options that are better/cheaper in my opinion. I use a hair serum constantly and this one seems to be fine so I wouldn't not try it but know that for the price tag it isn't anything special.4