Keratin Complex
NKST: Natural Keratin Smoothing Treatment 16 oz. Banded Duo

NKST: Natural Keratin Smoothing Treatment 16 oz. Banded Duo is rated 4.4 out of 5 by 105.
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NKST: Natural Keratin Smoothing Treatment 16 oz. Banded Duo
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What It Is

NKST (Natural Keratin Smoothing Treatment) 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

Kit Includes:

• 1 - Keratin Pre-Treatment Shampoo 16 oz.

• 1 - Natural Keratin Smoothing Treatment 16 oz..

 

*Totaling 32 fl. oz.

*Winner of Beauty Launchpad's Favorite Smoothing Treatment , 9-time award-winner of Behindthechair.com Stylist Choice Award for 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.Clarifying 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.

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.

Click to see more details.

Rated 5 out of 5 by from the Best Natural Keratin ever [Employee of saloncentric] easy to use, exelent for every diferent hair and super natural and amazing results
Date published: 2025-09-23
Rated 5 out of 5 by from Don’t walk, run. By far my fav. As we know red fades fast, not only does this product eliminate frizz but it true helps hold color.
Date published: 2025-09-22
Rated 5 out of 5 by from 10/10 This product is amazing! My hair stayed straight in 90+ weather with high humidly - It held up so well fighting against the Texas heat. I would recommend and brag about this product over and over again.
Date published: 2025-06-27
Rated 1 out of 5 by from Order went through but store did not have it Make sure to call the stores before purchasing an online order to be picked up in store because the inventory showed they had it in stock but when I went to pick it up the store told me they didn’t have it in stock
Date published: 2025-05-23
Rated 5 out of 5 by from love this! Love this smoothing treatment, I love how it gets rid of all of the frizz. Perfect for summer time!
Date published: 2025-05-04
Rated 5 out of 5 by from Good Love this product however I wish you could buy the treatment separately from the clarifying shampoo again.
Date published: 2025-02-24
Rated 5 out of 5 by from Best Keratin I’ve been using this brand since I first came on the market on years ago. I’ve tried others throughout that time because I know the markets ever changing and I like to try new things. But I always come back to this one. It gives the best results with no damage or bad smell.
Date published: 2025-01-21
Rated 1 out of 5 by from Toxic When the ingredient- timonacic, is introduced to heat, it releases formaldehyde. It’s not just when you’re doing the service. Every time your client heats their hair- the formaldehyde is released until the product has run its course.
Date published: 2024-12-10
Rated 5 out of 5 by from 10 out 10 i recommend I’ve been using this product for over 15 years and it hasn’t disappointing me yet
Date published: 2024-11-18
Rated 3 out of 5 by from Hate the double pack Keratin is great but I don't always need the shampoo. I would prefer to purchase it on my own.
Date published: 2024-08-28
Rated 5 out of 5 by from Wow! Easy upsell to any one with frizzy unmanageable hair!
Date published: 2024-06-20
Rated 2 out of 5 by from why do I have to buy shampoo I don’t need I have plenty of the shampoo. I don’t like being forced to buy product I don’t need. It’s another way for corporations to gouge customers. All I need is the smoothing treatment. What happened to the 8 oz size? Please bring it back and start being a friend to stylists.
Date published: 2024-06-20
Rated 5 out of 5 by from Awesome Product One of my all time fav treatments for keratin smoothing treatments! keeps hair shiny and smooth for 6months on my clients!!
Date published: 2024-06-14
Rated 5 out of 5 by from So Shiny!! I like the product because when it dried it did not create a toxic cloud and it did not burn my eyes and I find it great that it is only two steps because the hair is not heavy and does not need a third step. I feel very good because I saw client 3 weeks later and her hair was super straight and very shiny.
Date published: 2024-05-31
Rated 5 out of 5 by from love! This is one of the best treatments I’ve used! It’s a very simple process and can last up to 5 months which is awesome! The biggest selling point is that it’s formaldehyde free!
Date published: 2024-05-28
Rated 4 out of 5 by from Susan Marie I like the product. I wish the results lasted longer.
Date published: 2024-04-25
Rated 1 out of 5 by from Never received the order Received an email that my order was cancelled. No explanation
Date published: 2024-02-20
Rated 5 out of 5 by from Perfect for all types and conditions of hair!!! This is a wonderful product, much success with it !
Date published: 2023-08-30
Rated 5 out of 5 by from Good! Excellent product……………….!
Date published: 2022-05-20
Rated 5 out of 5 by from My 1st time experience Did exactly what it needed too, left my client and my hqir smooth i hve waxy hair it now takes me 5 min to straighten my hair. Im only on my 1st month so dont know if it last the 5 months.
Date published: 2022-04-16
Rated 4 out of 5 by from Great products Love the kit but prefer to have just the treatment and not the duo- otherwise great product
Date published: 2021-10-09
Rated 5 out of 5 by from The best in keratin treatments I've tried EVERY brand of keratin treatment and Brazilian blowout. Nothing compares to NKST. I've been using them for 15 years, since the very beginning and wouldn't switch. The quality and result is outstanding.
Date published: 2021-09-03
Rated 5 out of 5 by from Option to sell separately Love this product but would like to purchase just the keratin NOT the clarifying shampoo together. Please sell separately.
Date published: 2021-07-03
Rated 5 out of 5 by from Excellent Keratin Treatment I’m very happy I decided to try this keratin. Compared to the brand I was using before this one, this keratin is amazing! Much better quality product in my opinion.
Date published: 2021-06-18
Rated 5 out of 5 by from Great! Best keratin treatment I’ve ever used and used every kind so far this one is my favorite
Date published: 2021-04-28
  • y_2026, m_7, d_9, h_10
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.47
  • cp_2, bvpage2n
  • co_hasreviews, tv_72, tr_33
  • loc_en_US, sid_keratin-complex-nkst-natural-smooth-treatment-retail-duo, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_saloncentric
  • bvseo_sdk, dw_cartridge, 17.1.0, p_sdk_3.2.0
  • CLOUD, getReviews, 8ms
  • reviews, product