Categories | Wella Professionals Resist Strengthening Serum For Vulnerable Hair (6X20ml) £10.88 Restore your hairs youth with Wella Professionals Resist Strengthening Serum For Vulnerable Hair. A lightweight and nourishing gel, the product restores hair fibres from within, leaving it full of life and vitality. Wella Professionals Resist Strengthening Serum is the perfect tonic for mature, weak hair. With natural rooibos extract, hair is left feeling strong, replenished and revitalised. Directions for use: Shake before use. Massage into damp, clean hair. Do not rinse. Check stock and priceWella Professionals Resist Strengthening Serum For Vulnerable Hair (6X20ml)Wella Professionals Resist Strengthening Serum For Vulnerable Hair (6X20ml) on other UK sitesWella Professionals Resist Strengthening Serum For Vulnerable Hair (6X20ml) on other UK sitesWella Professionals Resist Strengthening Serum For Vulnerable Hair (6X20ml) on USA sitesWella Professionals Resist Strengthening Serum For Vulnerable Hair (6X20ml) on USA sites | Brands |