1. SUN DAMAGE IS CUMULATIVE.

Don’t be fooled into thinking you can build up a safe tan; there’s no such thing. All exposure contributes to possible damage at the cellular level.

2. THE SUN IS STRONG EVEN WHEN IT’S NOT SUNNY OUT!

Many people think they don’t need sunscreen on overcast days or for brief stints in the sun, but for the ultraviolet rays that damage your skin, a little cloud cover means nothing.

3. MOST OF WHAT YOU CALL AGING IS REALLY YEARS OF SUN DAMAGE.

Dermatologists with the Skin Cancer Foundation estimate that 90 percent of visible aging comes not from the number of candles on your birthday cake but the hours you’ve spent in the sun.

4. SUNSCREEN PROTECTS EVERY SKIN TYPE

If you have a darker complexion, the melanin in your skin confers some natural protection from sunburns, but you still need protection from harmful ultraviolet rays. While people with fair skin are more likely to develop skin cancer due to sun exposure, people with dark skin tones are at risk of more serious kinds of cancer when they get it.