Inspired by in-clinic technologies, more and more home-use devices are coming onto the market. But take care you're not confused or blinded by 'pseudo-science'. Not all over-the-counter gadgets live up to their claims - in fact some may even be potentially harmful. The hair removal and skin-tightening devices I've recommended here have safe and proven benefits. Although they are of course, less powerful than their professional counterparts used in clinics, with regular use they can deliver good results.