Though not as durable as a facelift, dermal fillers have become popular among women seeking a younger look and offer yet another alternative to cosmetic surgery, reports the April 2008 issue of Harvard Women's Health Watch.Dermal fillers are substances injected into the skin of the face to fill in deep folds and wrinkles. They are used mainly for "static" facial lines and folds, the ones that don't come and go as you change your expression.