Moisture penetrates deep into the stratum corneum. It gives your skin firmness and elasticity. There are no noticeable stains or scratches on the exterior of the main unit. Please understand if there are any oversights. Operation has been confirmed (see photos). Used for about 1-2 winters. The outer box has marks from removing store stickers. I think the condition is good, but please purchase with a full understanding of USED items. ★Returns are not accepted after purchase.