It’s not a case of just holding it against your hair and hoping for the best. We’d advise you to take a trip to your nearest dermatologist to assess how many sessions you may need, if your skin is robust enough to handle it, and how effective it will be with your skin and hair. They are safe when used properly, so check with your GP, read the instructions carefully and be sensible.

For those with a low pain threshold, you might experience some discomfort, but these devices are designed to be safe and easy to use at home. If you do find yourself wincing or see minor skin abrasions, though, stop immediately and seek the advice of your GP.