Wave and curl patterns in synthetic hair have a "memory" wave, which allows the curls to bounce back without much effort, and it won't frizz or droop in humid weather. However, because synthetic hair has different properties from human hair, you have to care for the hair differently in order to make it last as long as possible.
1)The shampoo should be mild or a shampoo specifically formulated for synthetic hair. 2)Purchase a detangling conditioner. Conditioners are usually labeled by type. So, they will say moisturizing, volumizing, or detangling on the front of the bottle. 3)Use a microfiber towel for drying. It dries the hair without ruffling the strands of hair. 4)When your extensions start to look dry or without sheen, rub a light weight oil such as jojoba oil through the hair. Leave it for an hour, and then wipe off excess oil by blotting with a towel.. If necessary, wash out the excess with a dollop of mild shampoo and rinse.