Hair that's damaged, dry, or prone to breakage from coloring, bleaching, perming, or repeated heat styling — the keratin derivatives and conditioning polymers are aimed at smoothing a compromised outer hair layer rather than at fine or already-healthy hair, which may find it too rich.

It's a straightforward at-home rinse-out step, easy for anyone regardless of styling experience; no mixing or professional application is required even though it's from a Schwarzkopf Professional salon line.

What sets it apart from a generic conditioner is that it targets the outer hair layer specifically — the keratin derivatives and conditioning polymers are there to smooth lifted cuticle scales rather than just add slip, which is why it's positioned for hair that's visibly rough or damaged rather than as an everyday detangler for healthy hair.

Use after shampooing, keeping application away from the scalp.

1. Apply to towel-dried mid-lengths and ends only.
2. Comb or work through with fingers to distribute evenly.
3. Leave for about 1–2 minutes.
4. Rinse thoroughly with lukewarm water.

Pros:

• Genuinely sulfate-free, so it won't strip color or undo the repair it's meant to provide.
• Detangles effectively thanks to cetearyl alcohol and quaternium-87, useful on hair already prone to breakage.
• A little goes a long way when applied just to mid-lengths and ends.

Cons:

• Contains a silicone conditioning agent (an amodimethicone copolymer), so it's not a fit for anyone specifically avoiding silicones.
• Rich enough that fine or non-damaged hair may find it heavy if applied too close to the roots.
• Best results come with consistent use alongside the rest of the Bonacure Peptide Repair Rescue range, not as a one-off treatment.