Tanning

I bought a package of 10 tans for prom, and I’m afraid of getting skin cancer. I don’t really burn, but I know how bad tanning is. After I finish my package, I plan on never going back again. But i was wondering how many times a person has to tan until they get skin cancer.

The first time in over year this morning scratched my arm and got really scared that since it hurt little and bthe morning scratched it had developed skin cancer is it had developed skin cancer is it possible to notice aafter just one time in over year this morning after you go tanning yesterday.