Wella Scalp + Hair Thickening System 4 Trial Kit

The Wella Scalp + Hair Thickening System 4 Trial Kit is a travel-sized introduction to System 4, formulated for fine, colour-treated hair that is noticeably thinning. It pairs a thickening shampoo and conditioner that cleanse gently while caring for coloured strands.

With caffeine, niacinamide and biotin, the lightweight formulas energise the scalp and visibly thicken each strand, building fullness in fine, colour-treated hair. A practical trial size for colour clients before moving to the full-size system.