Smart-starter conditioner for over-processed fine hair


Fiber quality renewal care for fine hair. The 1st conditioner created to be used before shampoo to repair very damaged fine hair without weigh-down effect. Thanks to its innovative technology, Soin Premier Thérapiste plays the role of a smart starter. Formulated to bind the hair in the manner of a protective gauze, it works upstream to infuse the fiber with softness so it is protected during washing.

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Soin premier Résistance Thérapiste - Kérastase

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SOIN PREMIER THÉRAPISTE is rated 4.6 out of 5 by 112.
Rated 1 out of 5 by from Great concept - but didn't do the job. I bought this after getting a sample of the matching shampoo and being happy with the results of the shampoo. I have very fine hair that will get oily at the roots if I don't wash at least every other day and the result is that my ends are very dry and this seemed like the solution. I used it as directed - conditioner first and then the Bain Therapiste shampoo (which I also purchased) second. My hair has never been so prone to static! It is dry and I certainly can't justify the cost with the results. I'm disappointed.
Date published: 2017-11-11
Rated 5 out of 5 by from Love this line! I purchased the soin premier therapiste along with the matching shampoo a few months back. I have thin strands of hair but a lot of it. My hair is highlighted and I blow dry my hair daily. My hair has become very dry and damaged over time. I tried this conditioner/ shampoo line and it is amazing! It has helped hydrate my hair and has made it very soft! It doesn't weigh down my hair. My favorite part is that I'm able to use this conditioner/shampoo combo every other day. I haven't been able to go a day without washing my hair usually but I can skip a day in between washes with this line. I love it and will continue to purchase again!
Date published: 2017-10-04
Rated 3 out of 5 by from Ce produit alourdit le cheveux Bonjour. J'étais curieuse d'essayer ce produit en particulier mais malheureusement, le trop-plein de silicone alourdit le cheveux. J'ai l'impression que les cheveux se "plastifie". Déçue
Date published: 2017-06-03
Rated 1 out of 5 by from Disappointed... I have generally been very happy with Kerastase products, but this regimen was a disappointment. I used both the shampoo and conditioner as directed, and found that it left my fine hair weighed down, greasy, and frizzy. Despite rinsing well, it feels like there is a constant residue left in my hair, and my hair looks oily. I won't be continuing to use this product.
Date published: 2017-05-27
Rated 1 out of 5 by from Not good, dries our hair Disappointed ! will not buy again ! The product dried out my hair multiple times, and the smell is awful and strong. I don't know anyone that wants to smell like you bathed_in_cologne (for hours). Based on the reviews I was excited to try it but This will be my LAST purchase from this brand.
Date published: 2017-05-15
Rated 5 out of 5 by from The best ever hair treatment solution hands down! Yes, I was sceptical and I gave it a try based on the good reviews. Got a small tube just to try and I turned out to be extremely happy with this product with my long processed blonde hair. I actually have also used it like a regular conditioner as well as sort of a leave on with a great success. When u apply it into the hair it feels really funny, almost as it doest glide very well or that I need to use a lot of it. But boy does it make the hair look good! My hair used to be very dry and almost dull. Not anymore! Well done Kerastase!
Date published: 2017-05-07
Rated 5 out of 5 by from Great smell, great texture Love the smell and it is not heavy which is great for my hair
Date published: 2017-04-13
Rated 5 out of 5 by from Thank you Kerastase!! After losing a huge amount of hair and complaining to my colorist for the past year about the porous condition of my hair, I researched products and found a salon right near my home which uses and sells Kerastase products. I've only used the Therapiste conditioner and shampoo twice and the difference in the texture and strength of my hair is drastically different! I can run my hands through it without fear of it falling out. I followed directions to a t and must say that I love these products. My hair feels silky soft; it's almost as if it was crying out for this stuff! When I come out of the shower, I spray on It's a Miracle 10 leave in conditioner and comb my hair with a wide tooth comb. The hair dresser also recommended I use the thermal heat protectant which I bought. I let my hair naturally dry while putting on makeup and then I take a dime size amount of the protectant and rub it in the palms of my hands and then run it through my hair before drying, especially the ends. Drying is something I just can't give up due to the fact that I work out every morning and sweat. However, I no longer wash/shampoo my hair every other day, instead I just wet it and proceed with the steps mentioned above. I highly recommend these products for anyone whose hair looks like cotton candy!! The day and night change between a trim and these products is miraculous!!
Date published: 2017-04-08
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The Soin Premier is a conditioner created to be used before shampoo to repair very damaged fine hair without weigh-down effect.
FOR WHO? For very damaged and over-processed hair (erosion level 3-4). Dedicated to fine hair.
WHAT DOES IT DO ? The fiber is protected from washing. • Each fiber is repaired, soft and light. • Prevents hair from weighting-down.


Before shampooing, apply to damp hair so the fiber can gently absorb it to protect it without weight.

Massage onto lengths and ends.
Leave in for 2-3 minutes, emulsify and rinse thoroughly.


FIBRA-KAPTM: compensate for the missing KAPs and reactive their synthesis.
• SP 94, supplies the follicle with the energy necessary to activate KAPs synthesis
• 6 amino-acids characterized by their capacity to attach themselves to damaged areas of the hair
• 1 wheat protein redivative helps restore uniformity and smoothness.
Sève de résurrection: known for its regenerating power