Boots Ingredients Repair Shampoo With Niacinamide 250 ml. Great for damaged and dry hair. What is it? This shampoo contains niacinamide and plant protein which gently cleanses whilst improving the appearance of split ends. What is it good for? – Helps protect against hair breakage – Helps hair feels stronger and looks smooth – Hair looks healthier with improved manageability – 100% Vegan How to use: Apply onto wet hair to create a foamy lather. Rinse out thoroughly.