Skip Nav
Healthy Recipes
19 Healthy Snacks Made With Bananas
Holiday Fitness
Healthy Gifts That Keep on Giving: The Best Monthly Subscription Boxes
Shopping Guide
40 Ultrastylish Gifts For Your Athleisure-Obsessed Friend

The Difference Between UVA and UVB Rays

Are UVA and UVB Rays Equally Harmful?

Sunscreen is a must for anyone who spends time outside. Your bottle probably mentions something about UVA and UVB rays. Since you care so much about your health, I thought I'd refresh your mind on the difference between the two.

UVA rays: These are less likely to cause sunburn than UVB rays, but they penetrate your skin more deeply. Watch out because UVA rays can go through windows, lightweight clothing, and even your car windshield. Prolonged exposure cracks and shrinks the collagen and elastin in your skin, which is why UVA rays are responsible for signs of aging including wrinkles, saggy and leathery skin, and suns spots.

UVB rays: These are responsible for tanning your skin, but they also cause sunburn. UVB rays are the main culprit when it comes to skin cancer. These rays also go through windows, and it doesn't matter if it's cloudy — you're still at risk for exposure.

Although both types are responsible for different health risks, they're equally harmful to your skin. So if you're planning on enjoying the day outdoors, lube up with a sunscreen that protects against both UVA and UVB rays 20 to 30 minutes before heading out. Reapply at least every two hours.

Around The Web
Join The Conversation
aeschere aeschere 7 years
thymine dimers form either way, i think?
UrbanBohemian UrbanBohemian 7 years
I use their Healthy Defense. I find the one in the picture leaves wierd white marks on my face.
LittleMzFit LittleMzFit 7 years
What are the ingredients?
LittleMzFit LittleMzFit 7 years
What are the ingredients?
psterling psterling 7 years
Just FYI, I love the neutrogena sunblock in the picture. I wear it under make-up every day and it doesn't make my skin greasy and goes on smooth. I'm a HUGE fan.
Healthy Banana Snacks
How Much Protein Should I Eat?
How to Help Seasonal Affective Disorder
Gigi Hadid Diet
Best Health and Fitness Gear | December 2016
Quotes About Burning Calories
Low-Calorie Snacks

POPSUGAR, the #1 independent media and technology company for women. Where more than 75 million women go for original, inspirational content that feeds their passions and interests.

From Our Partners
Latest Fitness
All the Latest From Ryan Reynolds