Used, I swear to God I only used it once, and it's preferable to wash it with sulfate-free shampoo. PRODUCT DETAILS Premium quality synthetic extension Weight: 160g or 180g Length: 20inch or 26inch pieces: 1 number of clips per 1pc: 4 clips Width of the piece on the head (ear to ear): 10.5 inches HOW TO USE Part your hair and clip the piece in at the back of your hair to add thickness, length and volume. Wash it with mild shampoo in cold water. Features You will be amazed by the quality. Wearing it, more confidence, and more charm. It is both natural looking and soft touch. You can wear it to parties as well. The item is Easy to wash and care just using a little mild shampoo in cold water. This Hair features a high-quality synthetic material, which gives the hair a look of naturalness and reality. Made from the finest fabric to give you a natural look. The longest lifespan for a synthetic extension ever made. It combs easily and feels soft. Note: Products can not be dyed. When used, please spray some water or hair care products to prevent static electricity. Heat tolerance: Not more than 160C. Comb gently from bottom to top. Not recommended for very short hair, Disclaimer Exposure to heat is not as easy as natural hair and has a specific technique. Please contact us to send the method. If you want to expose it to heat easily, we recommend buying our 100% natural extension. Lifespan of synthetic extension: 1 to 6 months, depending entirely on following the instructions. Approximately 3 to 30 uses. Advantages and disadvantages of synthetic extension: Economical price and option Much lower quality than natural human extension Limited heat response Tangling in general Shorter lifespan Made in factories to simulate natural extension Shedding during the first 1 to 3 uses.