Brush the wig gently to remove tangles and dust. Fill a washbasin or similar container with approximately 2 liters of water, add about 2 teaspoons (approximately 10 milliliters) of shampoo, and mix to dissolve. Soak the wig in the solution for 5–10 minutes, or approximately 30 minutes if heavily soiled, then wash by pressing gently. Rinse thoroughly with water.