This article summarizes the science behind the new law, here are some highlights:
- Sunscreen marketing cannot say waterproof or sweat-proof – I wonder why they could say that before if it wasn’t true.
- “Broad Spectrum” is allowed for products shown to prevent sunburn (from UVA rays) and skin cancer/aging (UVB rays).
- If it’s not effective against both kinds of rays, the label must say that it only prevents against sunburn and it does not protect against skin cancer/aging.
There are a lot of questions about sunscreens. Which ingredients are more harmful than helpful? Are the best products available in the US? Are spray on sunscreens okay to use? I don’t know these answers, and I don’t know the best source for information on these either. The Environmental Working Group, rated 4 star on Charity Navigator, has some tips on these topics.
You might also check your favorite sunscreen product rating on Good Guide to see how environmentally friendly it is.