For many outdoor enthusiasts, pills and elixirs claiming sun-repelling powers are becoming a new alternative to lathering with lotions and gels. But according to medical experts, these so-called “edible sunscreen” products should come with a “buyer beware” caveat.

When comparing sunscreens, do you know what a difference in SPF actually means? If so, you’re among a minority of consumers. While a majority relies upon SPF when purchasing sunscreen, Northwestern University researchers found that fewer than 1/2 of consumers surveyed…