If you have a synthetic wig, you'll need to purchase wig shampoo and conditioner. Mix the wig shampoo with cool water and dip the wig up and down in the mixture. Carefully rinse the wig in cool water and repeat the process with the wig conditioner. Rinse again and then pat dry and hang the wig loosely to dry at room temperature. With a human hair wig, you can apply a small amount of mild, high-quality shampoo to the hair (avoiding the scalp area) and carefully comb it in a downwards motion. Avoid scrubbing, twisting, or massaging the shampoo into the wig. For drying, first pat the wig with a towel to soak up as much of the water as possible, and then hang dry the wig on a wig stand or with a blow dryer on your head if you are in a hurry.