If the scar is from surgery or was through the levels of skin to the muscle below, there is little that can be done other than surgical excision and a fine line reattachment of the skin. If it was just through the epidermis into the dermis(outer and inner layers of skin) it will fade naturally as the skin replaces itself over the years. Keeping it lotioned may make the fibrous scar tissue a little more supple, but only time will fade it completely. There are abrasive treatments that remove top layers and may stimulate new growth a bit more rapidly, but always make sure that the doctor performing the proceedure has good referrences. Good luck and good health.

Rub honey on them. It works wonders.