Never. I have very pale skin and I just do not tan, I burn. I use SPF50 and I wear a sunhat. I now go to a dermatologist once a year to be checked for pre-cancerous moles. I shudder every time I see ads for tanning beds--and I "fired" the beautician I had who pushed tanning in a tanning bed at me. Do people not know that melanoma can be fatal?