Like prescription drugs, the FDA also regulates sunscreen. Look for products with an SPF (sun protection factor) rating of 30 or higher and can resist UVA and UVB rays. Try to find sunscreens with “Broad Spectrum SPF.”
According to federal law, manufacturers can only use this phrase on products that have passed the broad-spectrum testing program. So, these are more reliable than the rest of generic sunscreens.