The Best $25-or-Less Anti-Aging Products

Neutrogena Ultra Sheer Dry-Touch Sunblock SPF 55

Sunscreen is far and away the best product you can use to preserve your youthful skin. It prevents damage—wrinkles, redness, brown spots. So why aren't you wearing it every day? Probably because you think it's too greasy, or too sticky, or too pasty white against your complexion. Enough excuses. This formula absorbs quickly so skin looks clean, not shiny or chalky. Put it on every morning and slow the clock.

$11, drugstores