Goldwell Kerasilk Revitalize Redensifying Serum is a revitalizing treatment designed to promote thicker-looking hair and a healthier scalp. This advanced formula works to fortify existing hair strands and create an optimal environment for hair growth. Ideal for thinning hair concerns. Apply directly to the scalp and massage gently to stimulate and revitalize. Experience a fuller, more vibrant head of hair with regular use of this potent serum.