GK HAIR Keratin Shampoo 1L Salon Size — Sulfate-Free Hydrating Repair for Dry, Damaged & Color-Treated Hair

GK HAIR Keratin Shampoo is a salon-grade, sulfate-free cleanser that hydrates, repairs and shields dry, damaged, and color-treated hair while smoothing frizz.

Engineered for everyday use in a 1L professional size, this keratin-enriched shampoo gently removes buildup while delivering moisture and protein to stressed strands. The formula focuses on restoring elasticity and surface smoothness without stripping color or over-drying the scalp. Lightweight enough for frequent washing, it pairs well with conditioners and styling treatments to maintain a polished, manageable finish.

How does this shampoo repair dry and damaged hair?

The keratin in the formula helps replenish structural proteins lost to heat, chemical services, and environmental stressors, improving resilience and texture over repeated washes. Hydrating agents work alongside keratin to soften the hair shaft so strands feel less brittle and look shinier.

• Keratin rebuilds and reinforces the hair fiber for reduced breakage.
• Moisturizers smooth the cuticle for improved light reflection and shine.
• Sulfate-free surfactants cleanse without stripping natural oils.

Will it protect my color-treated hair and keep it vibrant?

Yes — the gentle cleansing system is formulated to lift dirt and excess oil but minimize pigment loss, helping dyed hair retain tone longer between salon visits. The conditioning components also reduce fading by sealing the cuticle and reducing friction during washing.

• Low-irritant surfactants that help preserve color molecules.
• Cuticle-smoothing ingredients that lock down color and reduce dulling.
• Designed for regular use without accelerating color washout.

How does it control frizz and deliver smooth results?

By combining keratin protein with emollients, the shampoo reduces flyaways and helps align the cuticle, resulting in sleeker, more controllable hair after drying. Regular use improves manageability and reduces the need for heavy styling products to tame humidity-induced frizz.

• Cuticle-sealing action decreases surface roughness and static.
• Hydrating actives maintain flexible softness to prevent breakage.
• Compliments leave-in conditioners and heat protectants for longer-lasting smoothness.

Is this shampoo safe for sensitive scalps and everyday use?

The formulation avoids harsh sulfates and uses milder cleansing agents to reduce irritation risk for most users, making it suitable for frequent washes. Its balanced pH and gentle ingredients support scalp comfort while providing effective cleansing and conditioning.

• Sulfate-free formula reduces drying and irritation.
• Suitable for a wide range of hair types, including treated and delicate scalps.
• Large 1L salon size built for consistent at-home or professional use.

Who this is for: GK HAIR Keratin Shampoo is designed for anyone with dry, damaged, chemically-treated, or frizz-prone hair who wants a professional-strength, everyday cleanser that restores protein and hydration. It’s especially useful for people seeking smoother, more resilient hair while protecting color vibrancy and minimizing the need for heavy styling products. Pair it with a GK HAIR conditioner or leave-in treatment to complete a maintenance routine that supports healthier-looking, more manageable hair.