Treat extensions gently. Gently brush through hair with wig brush make sure it's designed to glide through hair extensions, wigs and other hair pieces. Shampoo hair using mild moisturizing shampoo. Lather hair gentle and work the shampoo down the hair. (Treat it as if it was your own hair) Rinse hair and blot hair gently. Apply leave in condition of your choice after shampoo and detangle hair gently using a wide tooth comb. Make sure hair is completely dry. It's best to let extensions air dry or blow dry your preference but only on low heat. I recommend air dry to keep the hair from being damage of excessive heat. Also, to avoid tangling while sleep, wrap hair up with a satin scarf or sleep cap to prevent friction. Kia Extensions are Dye-friendly. Over processed hair can damage the extensions and prevent the hair from being reuseable.