Sunscreen can no longer be advertised as waterproof.
In the past, sunscreen manufacturers could advertise that their products were waterproof. That is no longer allowable and must now be advertised as the following: water resistant, which is effective for about 40 minutes in water; and very water resistant, which is effective for around 80 minutes in water. This means that after being in water or sweating, the AAD suggests reapplying sunscreen every two hours.
Infants under six months should not wear sunscreen.
For the most part, infants should not wear sunscreen as their skin is much more sensitive than adults. The best way to protect children under six months from the sun is to clothe them in protective gear such as long sleeved shirts and wide brimmed hats. Also, making sure they are hydrated is essential.
Sunscreen does actually expire.
Still using that old tube of sunscreen from last decade? You may want to check the expiration date and toss it. Despite popular belief, sunscreen does actually expire – and using an expired product is not a good idea. Most sunscreens will retain their original potency for up to three years. Most products will change in smell and consistency when they have started to expire.
