If wearing daily, I suggest washing your pieces every 2-4 weeks. Please use a high quality, sulfate free shampoo and conditioner. Fill your sink with lukewarm water and add a coin sized amount of the shampoo. Dunk the topper, holding it at the part. Remove it and gently squeeze the water out from top to bottom. Repeat until clean, then rinse under running water. Repeat this process, this time using a conditioner instead of the shampoo. Make sure that you use a water softener. Hard water leaves a residue that affects the quality and color of the hair. I highly recommend using distilled water to wash your pieces. During the winter (or in drier locations in general) use a high quality, leave-in conditioner to prevent tangling.