The Toppik Hair Building Fibres Powder in Medium Brown is a giant-sized paraben-free product designed to help with hair loss. Made with keratin as the active ingredient, this powder is suitable for both men and women. The formulation includes all-natural ingredients and is free from sulfates, making it a safe and effective choice for those looking to thicken and build their hair. The branched fibres in this product help to create the illusion of fuller hair, giving the appearance of increased volume and thickness.