Purely zinc oxide sunscreens, where zinc oxide is the only active ingredient, are considered safer due to the absence of other active ingredients.

“what I mean is the only active ingredient in a zinc oxide only containing sunscreen is zinc oxide and then there are a bunch of other things that allow it to be a lotion for instance again up to 25% concentration why would somebody not want to use zinc oxide containing sunscreen up to 25% and opt for anything else you might ask right if that's considered safe”