Keratin Complex
NKST: Natural Keratin Smoothing Treatment System Kit

NKST: Natural Keratin Smoothing Treatment System Kit is rated 4.2 out of 5 by 50.
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NKST: Natural Keratin Smoothing Treatment System Kit
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What It Is

NKST is a multi-award-winning keratin treatment that penetrates the cuticle to reduce frizz and curl, making the hair stronger, smoother and healthier for up to 5 months. This revolutionary smoothing treatment is powered by Signature Keratin to help repair damage, eliminate frizz, cut styling time and deliver a soft, smooth and shiny finish.

What It Does

• Blocks humidity and eliminates frizz.

• Formulated with our Signature Keratin for stronger, healthier hair.

• Instantly repairs damage.

• Increases manageability.

• Delivers luminous shine.

• Dramatically reduces blow-dry time.

• Enhances color vibrancy.

• Cumulative results.

• Results last up to 5 months.

• Voted behindthechair.com’s “Favorite Chemical Smoothing Service” 9 years in a row.

• Winner of the Beauty Launchpad 2019 and 2020 Readers Choice Award for “Favorite Smoothing Service”.

What Else You Need to Know

Winner of Beauty Launchpad's Favorite Smoothing Treatment , 9-time award-winner of Behindthechair.com Favorite Chemical Smoothing Service

NKST: Water/Aqua/Eau, Hydrolyzed Keratin, Timonacic, Cyclomethicone, Dimethicone, Glyceryl Cocoate, Hydroxyethylcellulose, Xanthan Gum, Glycol Distearate, Cyamopsis Tetragonoloba Gum, Aminopropyl Phenyl Trimethicone, Dimethiconol/Silsesquioxane Copolymer, p-Benzoquinone Fragrance/Parfum. Clarify Shampoo:Water/Aqua/Eau, Ammonium Lauryl Sulfate, Glyceryl Cocoate, Ammonium Laureth Sulfate, Cocamide MEA, Hydroxyethylcellulose, Dimethicone, Cocamidopropyl Betaine, Glyceryl Stearate, Glycol Distearate, Cyamopsis Tetragonoloba Gum, Hydrogenated Jojoba Oil, Caprylyl Glycol, Hexylene Glycol, Phenoxyethanol, Potassium Sorbate, Fragrance/Parfum.Keratin Obsessed: Deionized Water, Dimethicone PEG-8 Meadowfoamate, Glycerin, Hydrolyzed Keratin, Hydrolyzed Silk, Panthenol, PEG-2 Dimeadowfoamamidoethylmonium Methosulfate, Coceth-7, PEG-40 Hydrogenated Castor Oil, Dicaprylyl Ether, PPG-1-PEG-9 Lauryl Glycol Ether, Lauryl Alcohol, Myristyl Alcohol, Hexylene Glycol, Undeceth-11, Butyloctanol, Undeceth- 5, Propylene Glycol, Silicone Quaternium-16, Polyquaternium-47, Polyquaternium-39, Iodopropynyl Butylcarbamate, Diazolidinyl Urea, Fragrance/Parfum.

Purchases made in SalonCentric stores may be returned to any SalonCentric store. Purchases made through SalonCentric Customer Service, SalonCentric Business Partners, and SalonCentric.com orders Sold and Shipped by SalonCentric may be returned to a SalonCentric store; however, the return must not exceed $450 and must include the original receipt, packing slip, or invoice. For returns in-store of online orders, the refund will be credited back to the original payment method once the return has been processed. For SalonCentric.com Online Exclusive orders sold and shipped by third-party sellers, please see more details linked below for return steps.

The SalonCentric return policy does not currently apply to Kérastase & Shu Uemura purchases. Kérastase & Shu Uemura do not accept returns.

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Rated 5 out of 5 by from smooth this is the best straightening product out there. If done correctly and maintained, nothing compares
Date published: 2025-02-15
Rated 5 out of 5 by from First time user, turned out great! Wow! First time user. Need to get my saturation technique down, but so far I am IN LOVE! And so is my client! Working with another client today with hair that is thicker and more coarse, can't wait to see the results!
Date published: 2024-12-07
Rated 5 out of 5 by from Hair smoother I’ve been using this product for 10 years, my clients have up to six months of lasting results, if done correctly. This product is a miracle worker for people who have curly hair.
Date published: 2024-11-10
Rated 5 out of 5 by from absolutely in love with KC max! This product has been a game changer for many of my clients. Living in the south, and having such high humidity has made it nearly impossible for so many of them to effortlessly do their hair.
Date published: 2024-11-06
Rated 5 out of 5 by from best smoothing treatment The best smoothing treatment out there. My clients love it as much as I Do. Hair is always smooth and silky!
Date published: 2024-08-05
Rated 3 out of 5 by from not lasting I’ve been using this product for awhile on my clients and have had great luck. Lately though it’s not lasting. They use the Keratin complex shampoo and conditioner that I get them. I have 2 that come in once a week for shampoo blowdrys and I’ve noticed their hair isn’t holding the treatment as long as it used to.
Date published: 2024-08-05
Rated 1 out of 5 by from not worth the price this was ridiculous amout of money for 4 oz of product
Date published: 2024-01-20
Rated 1 out of 5 by from Do Not Recommend I had to use the whole bottle for one client, followed the directions perfectly, and as soon as she washed her hair there was no difference.
Date published: 2022-08-02
Rated 1 out of 5 by from Used almost the whole bottle for one client The smoothing treatment that comes in the kit was a super small size, very disappointing! I Used the majority of the bottle for one client.
Date published: 2022-07-05
Rated 5 out of 5 by from NKST product Great product!! Had to use a little more then what the directions call for
Date published: 2022-06-11
Rated 5 out of 5 by from Hair straightener Keratin treatment did its job. The chemical smell was a bit strong but it definitely works to make the hair straight. For frizz I have had better but I will try it again!
Date published: 2022-06-02
Rated 5 out of 5 by from love the brand! got great results!! and love that it came with the leave in conditioner
Date published: 2022-05-20
Rated 4 out of 5 by from Acceptable My hair turned out straight and it didnt have the smell that traditional keratin//brazilian. I feel like the spray in the system is a bit heavy but it might just be me.
Date published: 2022-05-16
Rated 2 out of 5 by from Not so straight Her hair started reverting in one day. I've done them several times , this time was the worst.
Date published: 2021-09-03
Rated 5 out of 5 by from great product this product is so easy to use and very effective. I will post a picture below, great price for such an awesome product
Date published: 2021-08-18
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