Most people who get a tan are fitness. Because white skin and black skin have different muscle lines, black is more beautiful. This is also the reason why everyone will be dark and shiny enough in fitness competitions. Generally, tanning is divided into three types: sun-free, sun-assisted and lamp-dried.
Briefly introduce the principle of sun-free dyeing, and you can apply what can be washed off immediately. Attention-just sunbathe. A lamp fan is a machine used to dry lamps. All need to be rubbed dry to have color. Hope to adopt