Wella Scalp + Hair Thickening System 4 Leave on Treatment 100ml

Wella Scalp + Hair Thickening System 4 Leave-on Treatment is a weightless, colour-safe leave-in treatment for fine, colour-treated hair that is noticeably thinning. Applied to a damp scalp, it provides continuous support without rinsing.

Concentrated with caffeine, niacinamide and biotin, it energises the scalp and visibly thickens each strand for a denser appearance. Non-greasy and lightweight, it builds fullness in fine, coloured hair while protecting colour.