Frequently Asked Questions Can I use Philips straighteners/curlers on wet hair? You should never use your Philips straightener/curler while your hair is wet. Read on to find out why. Wet hair is more prone to damage Your hair is the most sensitive while it is wet. Straightening it will cause stress in your hair and will not give a satisfactory result. Straightening/curling wet hair is not safe You run the risk of an electric shock or damage to your styler. The wetter the hair, the more steam the styler will produce.