People with color-treated or highlighted hair, particularly hair left porous by lightening or repeated processing, who want to slow color fade between salon visits. It's distributed through the professional Schwarzkopf Professional channel but is used exactly like a standard conditioner at home — no salon visit or professional mixing is required to use it correctly.

Its differentiator is that the pH adjustment is doing the actual work of slowing color loss — closing the cuticle instead of relying on filming agents or extra moisture alone — which is a more targeted mechanism than a general "color-safe" conditioner claim.

Apply to towel-dried, freshly shampooed hair, distribute through mid-lengths and ends, leave on for one to two minutes, then rinse thoroughly. Schwarzkopf's professional guidance suggests roughly 8–12 g per application in-salon; for home use, a normal palm-sized amount for hair length is appropriate. Using it after Bonacure's matching Color Freeze Shampoo keeps the pH-focused system consistent.

Pros: the acidic pH targets the actual mechanism of post-color fade (an open cuticle lets pigment escape) rather than just adding general moisture; keratin content addresses protein loss common after coloring; no added silicone, so it's less likely to build up on fine, frequently-colored hair over time. Cons: it's a maintenance conditioner, not a bond-repair treatment, so it won't reverse existing chemical damage; benzophenone-4 is a recognized potential contact sensitizer for a small subset of users; the stated color-retention benefit (~30 washes) is temporary and depends on continued use rather than being a one-time fix.