Genesis - Défense Thermique

Great product, bad execution

It does its job very well, my hair has felt much silkier and smoother since purchasing it. However, I'm not one typically too bothered by scents, but this scent smells overwhelmingly like axe body spray...I also don't love that the spray nozzle does a very direct spray instead of more of a mist, feels like I have to use more product to get it all over my hair.

Greta Product, the bottle last a while. Great scent and works great in my hair .

Overpowering smell

Unfortunately it smells like products you find the cleaning/household isle - furniture polish 🤔?! Such a shame because it’s a nice product. Please improve the scent.

Second time buying, really like this product

Unlike other heat protecting sprays, this one helps detangle and my hair is so shiny and manageable after a blow dry. The bottle lasts a while too

So far so good

I started using this when I had long hair, recently I chopped four inches off. There has been no adverse effects, and the smell is lovely, but I am not sure this is actually benefiting my hair in any way? I will use the whole bottle and see if anything changes when I run out.

Fabulous for fine hair

I’ve noticed the difference ever since I started using this! Perfect for my thin and fine hair, it makes my hair sooo soft and silky, plus it won’t weight my hair down.

Too expensive! To much money for the skinny little bottle.

Not for me

Did not do anything. Dispenser is awkward, hair was looking dull and I swear it does not provide any thermal protection. Would not repurchase, probably the worst Kerastase product.

Best Hair Spray for Easy Brushing and Amazing Scen

This is my absolute favorite spray. My hair is blonde, and I can easily brush it with this. It smells amazing.

Frizz-Free and Fabulous: My Go-To Hair Savior

The only downside to this product is the price, but it's absolutely worth it! I use it before blow-drying my hair, and wow—my hair feels and looks so healthy while staying frizz-free, even in Florida's humidity. Plus, the scent is amazing. Kerastase never disappoints!

Made my long hair soft and shiny! Fresh and clean smell! Would definitely recommend!

I used this along with the serum and shampoo and conditioner. I did see less hair fall out, but it made my hair so dry and brittle it just wasn’t worth it.