Using these curly clip - in hair extensions is easy. First, section your own hair and then clip the extensions onto your hair, starting from the bottom. You can style them just like your natural hair, using curling irons or straighteners. When it comes to maintenance, wash them with a mild shampoo and conditioner regularly. Avoid sleeping with them on to prevent tangling. And when not in use, store them in a cool and dry place. Also, be gentle when brushing to keep the hair looking its best.