Stretch marks are a form of scarring on the skin caused by tearing of the dermis. They first develop as reddish or purple lines, but tend to gradually fade to a lighter color. Here at RoxSpa, stretch marks can be treated with multiple hand pieces from the Alma Harmony System. It is best to treat stretch marks when they are red or purple in color, however, the Harmony can help diminish stretch marks that are already white. The body responds to each treatment by producing new collagen and tissue.