GENESIS Serum

The Kerastase Genesis serum has been a great addition to my routine. It’s lightweight, absorbs quickly, and doesn’t leave any greasy residue on my scalp. I apply it daily, and my hair feels stronger and looks healthier overall. The scent is subtle but pleasant, and the dropper makes it easy to apply just the right amount. I’ve noticed less fallout when brushing, which is a big plus. I received this product for free from Topbox Marketing for testing and review purposes.

I found it ok

I have to say I was a little underwhelmed by this product. Very runny, and had a strong alcohol smell. Far Cary from the shampoo and conditioner in this product line. Thank you topbox for giving me the chance to review this!

Decent hair Serum

I have used this product for few weeks after using genesis shampoo and conditioner. The serum is very light and absorbs instantly on the scalp. The serum helps a little with frizz and provides shine to hair but doesn’t long last longer and makes my hair dry later. I’m giving 3 star because I don’t see visible improvement with my hair breakage concern. I received this product for free from Topbox Marketing for testing and review purposes.

I’ve been using the Genesis serum nightly on towel-dried hair for about four weeks. Right away I noticed the texture felt quite light and easy to apply — it doesn’t leave hair greasy or heavy at all. The scent is subtly fresh, not overpowering, which I appreciate since I apply it close to bedtime. After a few weeks of use, I feel like my scalp is less itchy and more balanced, and I’m seeing fewer hairs fall out during shampooing or brushing. My hair feels stronger at the roots, and I have a sense that shedding has slowed down — though I’ll need a few more weeks to say for sure. Overall, it feels like a gentle yet potent treatment for hair-fall prevention rather than a quick “beauty serum.” I received this product for free from Topbox Marketing for testing and review purposes.

Worth it with consistency

I've been using this product for a few weeks and I found that in addition to the shampoo and conditioner, it is great for helping with hair and scalp, nourishment and hair rejuvenation. the scent is very minimal and the applicator is very easy to use to apply to your head. I received this product for free from Topbox Marketing for testing and review purposes.

Interesting fragrance

After regular use, my hair feels more resilient. The fine strands don’t break off as easily when brushing or styling anymore. This serum gave my hair a stronger foundation, improved scalp condition, and helped reduce breakage and loss. If your hair is thinning, fragile, or easily breaks I’d definitely recommend giving this a try. I received this product for free from Topbox Marketing for testing and review purposes.

Fine serum, overpriced for what it is

I received this product for free from Topbox Marketing for testing and review purposes, and received the whole system (shampoo, conditioner, serum) to test. As mentioned in my reviews for the shampoo and conditioner, I didn't find this line helps with hair fall, but it does have other merits that lead me to give it three stars over one for not meeting claims. I do have an oily scalp and roots and as such, I really couldn't use this serum as recommended. Applying the recommended amount to my scalp just made my roots excessively oily. I gave up using it on the scalp and started using it on the ends instead. This does add a nice shine without adding weight to my hair, and using this line makes my hair easier to brush through and it tangles less. it dries own extremely quickly and I love the scent. I do feel like there's other, less expensive products that give similar results though and as I wasn't able to use it on my scalp, I didn't get the reduction in hair fall benefit that is the main marketing point.

Visible Results for Thin, Fragile Hair

I’ve been using the Kérastase Genesis Serum for a few weeks now, and I can honestly see a noticeable difference in my hair. The texture is super lightweight — it absorbs quickly and never feels sticky or heavy, which is perfect for thin or fragile hair. My hair feels smoother, healthier, and a lot stronger, especially near the roots where I used to see the most breakage. It adds a soft shine without weighing my hair down, and it layers easily with other products. If you struggle with thin, delicate hair, this serum gives nourishment without any greasiness — and it actually shows results over time. I received this product for free from Topbox Marketing for testing and review purposes. / Recommended ✔️

Amazing serum

I received this product for free from Topbox Marketing for testing and review purposes. I love this serum. The smell is amazing. I used it after my shower and before I blow dry and I’ve noticed a big difference in the health of my hair. A lot less damage and breakage.

Game Changer

Scalp serum = total game changer ✨ I apply the Genesis serum nightly, leave-in. At first nothing dramatic — but by week 4 I noticed far less hair in the shower, hairline looking fuller, and my roots feel stronger. My hair is smoother, looks thicker at the top, and breakage is way down. I’d say this serum is perfect for anyone with fragile, thinning or stressed hair — but you’ll need patience and daily use. “I received this product for free from Topbox Marketing for testing and review purposes.”

Amazing!!

I’ve used this product 3 weeks ago and it is so effective!! Easy application, absorbs quickly and it’s easy to concentrate on the areas that need help. I normally used to loose a lot of hair during each bath and today it’s been just a few instead of handful! Get it for yourself it’s worth every penny

I’ve been using the Kerastase Genesis Serum for a few weeks, and I can really see a difference. My scalp feels calmer and less irritated, and I’ve noticed a reduction in daily hair fall. The serum is lightweight, non-greasy, and absorbs quickly without leaving any residue. I use it consistently every night, and my roots feel stronger and healthier. The scent is subtle and soothing as well. Overall, it’s a great addition to my routine and works especially well for anyone dealing with weakened or thinning hair. I received this product for free from Topbox Marketing for testing and review purposes.