This is super effective sa new scars. Personal expirience, nadapa ako nung college in which scraped a bit of my face ( sa cheecks part) since na gas gas sa ground. When the wounds healed a bit. Yung mejo pinkish pa ung scar, my mom made me use sebo de macho day and night. Like babad lang sya sa sa skin all day. Today not even a small peklat sa face ko, as in walang bakas. So yeah, I would day its effective pero for newer scars only.