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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.
Love this hair serum. I apply it after blow drying/styling my hair to my ends. Keeps them from looking brittle and dry, and instead leaves them weightlessly shiny5
This serum is lightweight, and added incredible shine. It didn't really help with frizz but i liked the shine it gave me.4
I used this serum just on the ends of my hair, as directed. I can't say I noticed any significant decrease in the appearance of my split ends or frizziness. The price is insane for not doing much!3
I had high hopes for this serum, but it was just fine, not great but not bad, just OK. The sample was really small, I only got 2 uses out of it (and directions said 1-2 pumps but the sample wasn't a pump so it was difficult to know how much to use). It did make my hair shiny and didn't weigh it down, but it was only moderate in taming the frizz. I'm glad I got to sample it in my monthly birchbox, but I wouldn't splurge to buy it.3
I already use a similar product, but this serum was lightweight and left my hair feeling light and fresh!5
Didn't weigh my hair down and smelled wonderful! My hair felt sleeker and shinier after using this.4
It was great. I loved using it. Perfect size and worked great!5
This product did help to hydrate my hair and make it smooth, however not in any sort of magical way. It works, but is nothing special.3
Smells pretty, works well. I apply it to my hair when dry. Add a little to the top to maintain frizzy I get around my hairline in the heat, and to my ends.4
I have always loved products from this brand, they always work pretty well. This stuff seems effective, with all the leave in conditioner birchbox sends I just prefer the spray kind. It seems more lightweight and easier to manage into your hair4