Respuesta :

30 minuets per session but start of at about 10 minuets and slowly work your way up to a max of 30

the answer is: 30 minutes

Using tanning device for too long could damage the cells on your skin, which might lead to things such as irritation, swelling, redness, or make your skin look older than it supposed to.  Overusing it also develop a chance of getting skin cancer, even though this occurrence is very rare.