Can synthetic hair be washed?
You should be able to buy shampoos for synthetic wigs and extensions at a beauty supply store or wig store. (Try only to use conditioner if you can.) That said, you should only wash synthetic hair if it is smelly or visibly dirty. Washing will not add shine or strengthen the hair, and you should not wash it too often.
How do you wash synthetic hair?
What can I wash my synthetic wig with?
Washing your wig
As for shampoo, you can either use a wig shampoo or laundry detergent. Why? Because the wig is made of synthetic fibers and not human hair, regular shampoo will destroy the hair. The wig shampoo and laundry detergent ensure the safety of the wig.