UNLIKE the human hair,the synthetic hair fiber may get tangled after 2-3 wears because the synthetic clothes that build up static,especilly in winter.Besides,the dust and moisture in the air may hurt the synthetic hair fiber.To prevent it,kindly you can get a spray bottle and put some conditioner in it, then fill it up with water. Spray it in the hair extensions.It will make the hair extensions not very dry and prevent getting tangled in some extent. Please understand. | MATERIALS - Heat Resistant Fiber,able to resist the heat from styling tools to give you almost the same styling versatility as human hair (optimal temperature is 250-275 degrees). Going above 350 degrees is not recommended.With a matte looking, it looks real and you can restyled it with the scissors or curling iron | The Model in the pitures is wearing 2 pieces, if you want the same effect for your hair;Length: Approx 20"; Package included: 1 piece of curly hair extensions (5 clips attached per piece) | EASY TO WASH AND TAKE CARE - Just need a little mild shampoo and hair conditioner then washing in lukewarm water.then set on a flat towel and let them naturally dry.If the hair fiber has got tangled,kindly you can use little bit of laundry detergent and the water to soak and wash rinsed out then use a little bit of fabric softener and water to soak for conditioning then rinsed and let it air dry. Please don't blow-dry and don't wear it when sleeping or swimming | CAN'T BE CURLED BY IRON: The hair extensions is made from heat resistance fiber. It can be straightened easily but can't be curled by iron. The factory use special equipment and process to make curls