To repair a synthetic wig, remove any tangles using your fingers or a wide-toothed comb. Combine two equal parts of cold water and fabric softener in a spray bottle, lightly spray the wig, then pat dry with a towel. The fabric softener adds moisture and prevents static and frizz.
You can also add 1 teaspoon of shampoo to 2 quarts cold water, but never use hot water because hot water causes further damage to the hair. Place the wig in the water, and soak for three to five minutes. After soaking, gently swish the wig back and forth, but do not rub the wig.
Rinse thoroughly in cold water twice. Gently use a towel to remove excess water, but do not squeeze, rub or twist the hair with the towel. After getting the majority of the water out of the wig, spray it generously with a leave-in conditioner. Let the wig air dry on a wig stand, and never brush or comb your wig while it's wet.
Wigs should be washed after six to eight wears or every two weeks if worn daily, and should always be kept stored on a wig stand in order to retain the intended shape of the wig.