K18 Damage Shield Protective Shampoo is a pH-optimized, everyday cleansing shampoo made to reduce the hair cuticle swelling that normally happens during washing, one of the reasons hair frizzes and tangles after a wash. It's built for regular use rather than occasional deep cleansing, and is gentle enough for every wash while still cleansing effectively.
The formula uses a blend of mild sulfonate and betaine-based surfactants rather than harsher sulfates, combined with K18PEPTIDE (sh-Oligopeptide-78) to help replenish protein that hair naturally loses while it's washed. By managing pH during the wash itself, the shampoo limits water absorption into the cuticle that can otherwise leave hair dull, tangled and frizzy once dry.
- pH-optimized formula reduces cuticle swelling during the wash step, not just after
- Color-safe, suitable for chemically treated hair
- Gentle enough for daily or frequent washing
- Contains K18PEPTIDE to help offset protein loss during cleansing
It's the first step of a two-part routine, followed by the matching Damage Shield conditioner. Like other K18 formulas, it includes several fragrance components (limonene, hydroxycitronellal, citrus peel oils), so check the ingredient list if you're sensitive to any of them.
