This product is designed for in‑salon or professional use. It is mixed into the companion treatment (Keratin Wonder Superactive) at a ratio of 1:5 (for example 3 pipettes/6 g Booster + 30 g main treatment). Apply to towel‑dried hair section by section, leave on for approx. 10 minutes with heat or 15 minutes without, then rinse thoroughly. Follow with a suitable conditioner or mask based on hair type.