With effective, simple ingredients, this is the sunscreen we use for daily wear to protect from UVA and UVB rays. The active ingredient is zinc oxide (non-nano, pharmaceutical grade), at 10%, which provides SPF 15 protection. This will block 93% of UVB rays when used as recommended.
"Active" sunscreen is water resistant for at least 40 minutes. Rub in the cream throughly to reduce the whitening effect - we have found it is much less whitening than most mineral-based sunscreens.