Press the pink power button to turn on the device in locked mode. The LED screen shows a padlock and a battery icon showing how much charge the battery has. Then a sensor wave icon shows. This means the skin tone sensor is ready.
I'm a bit obsessed with home beauty devices. It's a habit I've had for around 7 years now. I love the science, testing and reviewing them, and sharing my experience and feedback on my site WeAreBodyBeautiful.com. I'm also a crazy dog lady, and I don't care.