The tester: Lerato Mosieleng, 25, of South-West London, a beauty therapist, says: At first my skin became irritated and broke out a bit more than usual. But over the following weeks, this diminished and whereas I used to have a colony of spots most days, now I just get the occasional one. I used to cake on my make-up but now I need only lipgloss. Ironically, I haven't had a facial for over three months and my skin has improved massively and the scarring is also less apparent.