How much exposure it takes to cause a reaction varies from person to person ... If that's not possible, put a little bit of sunscreen with zinc oxide and an SPF of at least 30 on small areas ...

These tend to provide less sun protection, CR's tests have found, but a few are better than othersMineral sunscreens contain ...

Typically, sunblock includes zinc oxide or titanium dioxide ... as it may cause an allergic reaction. Before trying a new sunscreen or sunblock, read the label to make sure you’ll get the ...