Hair Extensions Fire : 2 piece clip-in synthetic hair extensions. Can be curled, crimped, straightened and simply blow dried. Remove tangles with you fingers or comb. Wash gently, rinse in cool water and hang to dry. Do not brush or comb while wet. Don't dye or process or use excessive heat. A wig cap is a recommended pairing as it can control hair under wigs (especially longer hair)or spirit gum adhesive can be used to secure the wig to your head and remover used to easily remove the gum adhesive. See our page on synthetic wig styling & care.