Crecepelo

Crecepelo is a tool that may or may not actually work. The idea is that you can make your hair grow faster with your smartphone, and some people do use it.

Here's how you use the application: when you open it, you'll see a sequence of images that explain how to put your smartphone on the affected area of your skull, where there is baldness or thinning hair. It will supposedly transmit waves that the app claims are capable of making your hair grow back. Afterwards, the app shows an image that explains how the hair grows. According to the app, your hair will grow back completely after 15 minutes.

When you have your smartphone on your head, the app turns the flash on and off in a strobing manner. It also starts to vibrate and shows different colors on the screen. In principle, the vibrations and lights will make your hair grow in the places where you are balding.

Crecepelo is more a joke app than anything else, since there is absolutely no scientific evidence to prove that it makes your hair grow. But you don't really lose much by trying, either. The only problem is that you have to spend 15 minutes holding the vibrating and flashing smartphone to your head, although doing so will likely get a giggle or two out of anyone around you, so that's a plus.