Treatments & Masks

Once or twice a week for most hair. Protein-based masks specifically shouldn't be used more often than that, or hair can start to feel stiff and brittle.

Generally no, unless the product says otherwise. Most hair masks are formulated for the strand and can make an oily scalp greasier if applied at the roots.

A hair mask is a rinse-out, once-or-twice-weekly deep treatment. A leave-in conditioner stays in daily for lighter, ongoing softness — they work together, not as substitutes for each other.

A moisture-focused mask like Karseell Collagen Deep Repair Mask or Fino Premium Touch Hair Mask — protein-heavy formulas are better suited to damaged, chemically treated hair rather than dryness alone.