Goldwell Silk Lift Intensive Conditioning Serum Concentrate 1 Ounce 30 Milliliters This helps to treat hair inside and out. It is an ultra-concentrated intensive conditioning serum restoring structural differences that arise during the staining process. Intensive Silk-protein Complex and Intralipid are ideal for lasting healthy shiny hair. *This is a professional product and should be used only by a trained individual. Seller is not liable for any adverse outcome resulting from the use of this product.