Soft and gentle for facial and neck cleansing/light exfoliation. Also great to remove mask with. Once wet, these sponges are soft and absorbent. Goodbye makeup-stained washcloths! Usually these sponges should be discarded after a month, some clients prefer discarding after 2 weeks do what feels best for you. But how long you keep them depends on what you're doing with them and what products you're using them for. Common sense will have to dictate.
Rinse well after use and air dry. You may store these on a soap dish to keep clean and sanitized. You may wash them with soap after every use if your prefer that.
You may also occasionally (once a week or so) use a small amount of anti-bacterial hand soap or use a good amount of your facial cleanser to clean the sponge.