I wash my wig carefully using a little mild shampoo (Paula sells one too) in wash basin with lukewarm water by submersing wig and turning it over several times quickly I may need to scrub the liner if I see soil, but take the wig out of water as quick as possible- after rinsing let wig drip & then put between 2 towels and press to remove excess water. Let drip dry upside-down. Shake wig upside-down several times (and I lightly spray with a “Shine”Liquid from Paula). Shake wig upside-down again and Carefully style with wig brush - encouraging the waves or curls that remain as new and I do not find need for hairspray.
Depending on how much natural hair you have you may put a wig cap or velvet grip on head before you put wig on.