Co- washing your bundles before installation is one of the best and easiest things that you can do. It will save you a lot of money in the long run. Always remember when you're using human hair that it's REAL HUMAN HAIR! The bundles you're purchasing came from someone else's scalp. It's important you co-wash your bundles to wash away any chemicals, bacteria or even some smells that maybe remaining in your bundles. So many believe that wearing hair extensions will excuse them from any hair maintenance, that's not true! It's imperative that you set a co-washing schedule. Keep your bundles looking flawless Queen!!