
K18
Leave-In Molecular Repair Hair Mask
A four-minute, no-rinse peptide treatment with a strong following among bleached hair, priced as one of the costliest repair steps.
Hair & Scalp · Repair
4 products we review are built for damage repair — 50% of them wash day. The ingredients doing most of the work: panthenol, bond builders and biotin. Most are made for color-treated hair, damaged hair and curly hair.
Repair, shape, shine and scalp care for straight, wavy, curly and coily hair.
Top rated
The ingredients behind it
Key actives in the products that deliver damage repair — tap one for what it does and how strong the evidence is.
Often paired with
Benefits that tend to come along for the ride.
4 products
4 products

K18
A four-minute, no-rinse peptide treatment with a strong following among bleached hair, priced as one of the costliest repair steps.

Redken
A sulfate-free, low-pH repair shampoo that colorists rate for softness on damaged hair, best used with the rest of the line.

Briogeo
A protein-and-moisture weekly mask that curly and natural-hair users rate for soft, stronger-feeling hair, at a mid-range price.

Olaplex
A gentle, bond-building daily shampoo that suits damaged and color-treated hair, priced well above most rivals.