We strongly suggest co-washing your hair before installing. Co-washing is a method to wash hair without using shampoo and washing with conditioner. When cowashing your hair you should use a moisturizing conditioner to wash the hair. Rinse the hair with cold water. Let the hair air dry and then install.
To maintain your hair wash your hair with sulfate free products. (Products that contain sulfate are very damaging and extremely drying to the hair.) Remember to use very minimal styling products and AVOID alcohol based products. Minimal heat will give longer life to your hair extensions.