This 3 More Inches Travel Pre-Wash Treatment contains a unique cashmere protein & amino acid blend which works to slow the ageing process & help hair to grow longer & more quickly. Hair will become easier to manage, more vibrant & will hold its colour for longer, giving you more inches of glossy, flexible & healthy locks. K.D. Directions of use: For best results use every second wash. Soak dry hair with product from root to tip, leaving to soak for an hour. Rinse, then wash with 3''' More Inches Shampoo. Follow with 3 More Inches Conditioner. If you use silicone based hair products, you'll need to wash your hair first, as these will prevent the treatment from penetrating the hair.