Genesis - Défense Thermique

Perfect

Hair feels softer, doesn’t weight it down when you put it in Easier to get my hairbrush through my hair

A good heat protectant if you use lots of heat. I don't use this every day because I don't love the scent.

Buy if you want greasy hair

Super expensive for such a terrible product. Will definitely leave your hair greasy!! Also, the nozzle is terrible and shoots product out so fast and narrowly onto your hair. Overall, there are better heat protectors.

Changed formula?

I’ve been using the genesis range for a year, after experiencing significant seasonal hair fall last autumn. It worked wonders at the time but now my hair is feeling really dry and frizzy, and cannot hold a style. I washed and dried without using this spray recently as I was having my hair put up for a wedding, and it did blow dry much easier, so I’m not sure if it’s the spray that’s contributing towards the dryness. It was out of stock for a while so I’m wondering if the formula has changed? Going to switch to a moisturising range for a while and hope that makes a difference! A shame, as I’ve recommended the range to lots of friends, but my hair is just so parched right now it needs a change!

Good lightweight protection but annoying nozzle

I like the Kérastase Genesis Défense Thermique. It feels really lightweight and doesn’t leave any residue, which I love. The only downside is the nozzle, it’s a bit awkward to use and makes it hard to spray evenly. Otherwise a good heat protectant.

Perfect for brittle hair

Makes my hair feel so soft and silky after use! The spray bottle can on occasion get stuck but for how good the product is it’s not really a problem for me! For reference I have been healing damaged and thinning hair that had a serious breakage problem however since using this my hair has been silky soft with minimal breakage

Not as good in the long run

Only good when your hair is damaged at first then it made my hair super dry in the long run. I would only recommend to use it on damaged hair then you can switch to another product later (I have fine straight hair )

You need this for your hair!

[I received this product in exchange for my honest review] I’ve been using the Genesis Defense Thermique Heat Protectant for a while now, and I’m genuinely impressed. It makes my hair feel soft, smooth, and noticeably stronger after styling plus, the scent is so luxurious it feels like a salon treatment every time I use it. I love that it protects my hair from heat without making it greasy or heavy, though I do have to be careful not to use too much or it can feel slightly coated. Overall, it’s become one of my go-to products for keeping my hair healthy and polished when blow drying or straightening.

Lightweight and effective

[I received this product in exchange for my honest review] This product is super lightweight and smells fresh! I think this spray did a good job protecting my hair from hear damage, my hair stayed soft and smooth!

Love the Smell

This heat protecting spray is amazing. It smells great and helps my hair to feel soft and shiny after drying. It protects from frizz. Not much is needed, just spray in a spritz or two all over hair and you’re good to go!

great stuff

great smell, makes my hair easier to comb and feel like it overall helps my texture. not too heavy on the hair which is really important to me, about to buy it a second time.

Heat Protectant

[I received this product in exchange for my honest review] Kérastase Heat Defense Crème provides excellent protection against heat damage while strengthening and smoothing hair strands. It leaves hair feeling soft, resilient, and frizz-free with a lightweight finish. Ideal for daily styling, it helps maintain hair health and shine, making it a must-have in any professional haircare routine