Because there are many bad hair products on the market, containing silicone and other bi-products, it is necessary to clean blades with liquid, based on alcohol. These bi-products can leave a thin layer of residue on your scissor, and the scissor will not cut even if the scissor is sharp, and ordinary soap cannot remove these products. A good product to use to remove this residue would be Isopropyl alcohol. Simply place a small quantity on a paper towel and wipe the blade thoroughly. This should be done minimum 3-4 times a week.