Keratin Complex NKST Before and After: On the left, a model with frizzy hair ('Before') and on the right, the same model with smooth, straight hair ('After'). The NKST bottle is in the center.

California Eligible Keratin Treatment

  • Results last up to 5 months
  • Repairs damage
  • Blocks humidity and eliminates frizz
  • Increases manageability
  • Delivers luminous shine
  • Dramatically reduces blow-dry time

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  • Red open NKST box showing bottle and aftercare on white background
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NKST Natural Keratin Smoothing Treatment System

Enjoy up to 5 months of smooth, shiny, manageable hair with our award-winning signature Natural Keratin Smoothing Treatment for sleek strands. This treatment is ideal for clients seeking smooth, shiny, and more manageable hair with maximum longevity.

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  • Before and After: Back view of wavy, frizzy hair (left) transformed into smooth, straight hair (right) after treatment.
  • Before and After: Back view of wavy, frizzy hair (left) transformed into smooth, straight hair (right) after treatment.
  • Before and After: Back view of wavy, frizzy hair (left) transformed into smooth, straight hair (right) after treatment.
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Trusted by Stylists

  • 5 stars

    Miranda M.

    The results are amazing.. leaves the hair feeling like silk my clients love it!

  • 5 stars

    Beatriz C.

    The best smoothing treatment out there. My clients love it as much as I Do. Hair is always smooth and healthy

  • 5 stars

    Stephanie B.

    Absolutely loved this product! The results I received where beyond my expectations, I will definitely be switching over to this after using another well know brand!!

  • 5 stars

    Sandra D.

    Wonderful product leaves the hair completely shiny

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SHOP NKST

Explore our full portfolio of customizable keratin smoothing treatments

Each of our treatments eliminates frizz, increases manageability, repairs damage, and leaves the hair noticeably softer with luminous shine!

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