Maybe
Yes, unless the cosmetic product is labeled SPF30 or higher, is also a broad-spectrum sunblock, and you are only out for a short period of time in the sun. You will need to wear additional sunscreen under your makeup if you’re going to be in the sun for an extended period. For longer periods of time in the sun, use a separate sunscreen and reapply it every two hours. Look for the label – most cosmetics offer no sun protection whatsoever.