Sun screen labels may have gone in for a bit of a revamp to make them easy to use and effective, yet experts feel many of them carry SPF ratings which could be misleading and dangerous.

"The high SPF numbers are just a gimmick," says Marianne Berwick, professor of epidemiology at the University of New Mexico. "Most people really don't need more than an SPF 30 and they should reapply it every couple of hours."
Dermatologists caution that sunscreen must always be used while going out in the sun, but that alone is not enough. Adequate protection with hats, shade and clothing must be taken to enable protection against ultraviolet radiation.
Source-Medindia