There’s a buzz about home use devices at the moment, but can those that use electrotherapy or micro-vibration really make a difference to your skin? Dr Christine Reader finds out. On the occasion that I do visit a spa, I must confess that I do not pay a minute’s thought to the science behind the treatments. I have no desire to investigate the reasons why a seaweed body wrap rids the body of toxins as is claimed or the exact effect by which a mud treatment is supposed to rejuvenate one’s complexion. Seeing as I always leave feeling refreshed, younger,…