Frequently Asked Questions

Get answers to common questions about K18 leave in treatment 0.5.

Visible repair occurs in about four minutes once applied to clean, towel-dried hair. Apply the recommended dose, let it sit without rinsing, then style as usual. For best results, follow your stylist's advice and repeat treatments as needed.

Yes. K18 leave in treatment 0.5 is color-safe and formulated for use after chemical services. It helps repair damage while preserving tone and shine. Always apply after rinsing color services and consult your stylist for timing with color processes.

A single in-salon application yields immediate improvement, while maintenance frequency depends on hair condition. For most clients, use K18 at home every four to six washes; very damaged hair may benefit from weekly applications until strength is restored.

K18 targets and repairs molecular hair bonds, producing measurable improvement even on heavily damaged hair. Severely compromised strands may require multiple salon treatments and a preventative care plan, but K18 can dramatically reduce breakage and improve manageability over successive uses.

No, it enhances styling results by smoothing, reducing frizz, and improving elasticity, which helps heat styling perform better. Apply your usual heat protectant when using high temperatures and allow the K18 treatment to absorb fully before styling for optimal results.

No rinsing necessary. K18 leave in treatment 0.5 is a true leave-in mask — apply to clean, towel-dried hair, wait four minutes to activate, then style. Use the recommended dose and follow with styling products as usual.