NYK1 Sulfate-Free Shampoo & Conditioner Set for Color-Treated Hair — 2×16.9 fl oz, Keratin- and Extension-Safe

NYK1 SALT Sulfate-Free Shampoo and Conditioner set is a gentle, salt- and sulfate-free duo designed to cleanse without stripping color, keratin treatments, or hair extensions.

This two-bottle pack (2 x 16.9 fl oz / 500 ml) from NYK1 pairs a non-sodium shampoo with a balancing conditioner made specifically for processed hair. The formula avoids sulfates, sodium chloride, and parabens so it helps preserve chemical bonds, color pigments, and smoothing treatments while still delivering a thorough clean and manageable conditioning. It’s tailored to daily aftercare for keratin and Brazilian blowout services, color-treated locks, and attached extensions, and is light enough for fine hair when applied properly.

How does this set protect keratin and Brazilian blowout treatments?

The sulfate- and salt-free formulas reduce the surfactant and ionic stress that can weaken keratin coatings and bonded smoothing systems. That helps maintain treatment integrity between salon sessions and reduces premature loss of smoothness and shine.

• Non-sodium, non-chloride surfactants that avoid de-bonding and coating erosion.
• Low-irritant cleansing to preserve treatment longevity and manageability.
• Conditioner supports slip and detangling without heavy build-up on treated hair.

Will this keep my color vibrant longer?

Yes — because the formulation avoids harsh sulfates and salt that can open the hair cuticle and strip dye molecules, the set helps maintain color saturation and reduces early fading. Regular use will slow color loss compared with conventional sulfate shampoos.

• Sulfate-free surfactants that are gentler on color-treated strands.
• Conditioner adds moisture and smooths the cuticle to lock in pigment.
• Suitable for both permanent and semi-permanent hair color routines.

Is this suitable for hair extensions and fine hair?

The shampoo cleanses effectively without harsh stripping, and the conditioner is formulated to provide moisture without weighing hair down when used correctly. For extensions and fine roots, apply conditioner from about one inch away from the scalp to avoid excess residue at the bonds.

• Gentle cleansing preserves extension bonds and attachment points.
• Conditioner offers lightweight hydration to prevent limpness on fine textures.
• Guidance for extensions: condition mid-lengths to ends, avoid roots.

What practical benefits will I notice after switching?

Users typically observe cleaner hair that retains smoothness and color for longer, with fewer signs of frizz or brittleness caused by stripping ingredients. The pair supports everyday maintenance while minimizing the need for additional protective products.

• Improved sheen and manageability on processed and natural hair.
• Reduced fading and longer-lasting keratin results between salon visits.
• Paraben-free formula for lower chemical load during regular use.

Who is this for: NYK1 SALT Sulfate-Free Shampoo and Conditioner set is made for anyone with chemically treated hair — including those with keratin or Brazilian blowout treatments, dyed hair, hair extensions, or delicate fine strands. It’s aimed at customers seeking a low-irritant, preservative-conscious daily wash-and-condition routine that protects salon investments and keeps hair looking smoother, more vibrant, and easier to style.