K18 sells peptide hair care products to reverse hair damage.

K18 earns strong reviews and, for many, clearly works: the Leave-In Molecular Repair Hair Mask, hair oil, and AirWash dry shampoo boost softness, shine, frizz control, and visible repair, especially on bleached or heat-damaged hair. Reviews also flag weaknesses—some find the mask inconsistent or heavy/clumpy if overused, shampoos can feel harsh, AirWash leaves starchy residue and limited longevity, and scent or formula shifts can disappoint—making results technique- and hair-type dependent.

K18 Damage Shield pH Protective Shampoo cleanses and protects hair health. This color-safe, pH-optimized formula minimizes damage during washing by reducing cuticle swelling, which helps prevent frizz, preserve color, and enhance shine. Featuring the patented K18PEPTIDE™, it replenishes protein to fortify hair. Gentle and scalp microbiome-friendly, it provides effective cleansing while maintaining hair and scalp health.

Damage Shield pH Protective Shampoo

Damage Shield Protective Shampoo

Jumbo Damage Shield Protective Shampoo

Mini Damage Shield Protective Shampoo

K18 Damage Shield Shampoo leaves my hair feeling clean, soft, and refreshed without stripping away moisture. I love that it helps protect against everyday damage while keeping my hair manageable and smooth. It lathers well, feels gentle, and pairs perfectly with other K18 products for healthier-looking hair!

Damage Shield pH Protective Shampoo

5.0 • 1 Review

1 review or post

Damage Shield pH Protective Shampoo 5.0 • 1 Review

Damage Shield pH Protective Shampoo

5.0 • 1 Review