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Good Question: Why do I get freckles?

Skin cancer is the most common cancer diagnosed in the US.

In Kentucky, statistics show that 136 people die each year from the disease.

Being sun smart is key in summer because of numbers like that.

Good Question: Cynthia in London writes: I used SPF 70, I didn't get burned, but why do I still get freckles?

The summer sizzle has been on in the Bluegrass.

Many have been forced to seek relief at swimming pools, but that means soaking up a lot of sun.

Every summer we are faced with sunscreen confusion.

The Food and Drug Administration requires that all sunscreen be good for at least three years, but some dermatologists say don't take the chance-throw it out.

"You should toss it after a season, when sunscreens are exposed to heat and direct sunlight they can separate," said Francesco Fusco a dermatologist.

So what is the difference between 15, 30 even 50?

"Basically if you are using a good SPF of 15, you'll be protecting yourself by about 95%, as the number increases from SPF 15 to 30 your boosting that to 97%," said Fusco.

Experts warn that there are no sunscreens that completely block the sun's harmful radiation.

Then there's the question of freckles, why if you wear sunscreen, and don't burn do freckles sometimes pop up?

Dermatologist say you don't have to burn to freckle.

Ultraviolet light stimulates melanin in our pigment triggering freckles, but if you do get a bad burn you may see freckles appear.

Genetics usually play a role in those who have more than others and some female hormones can also contribute to a freckle here and there.


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