Does sunscreen with an SPF over 30 actually work, or are the claims for anything over 30 just hype?

My WebMD Sign In

Please enter email address

Enter your password

Keep me signed in on this computer

Show more Information

If you select "Keep me signed in on this computer", every time you visit WebMD.com you won't have to type your email address and password. This means that a cookie will stay on your computer even when you exit or close your browser which may reduce your levels of privacy and security. You should never select this option if you're using a publicly accessible computer, or if you're sharing a computer with others. Even if you select this option there are some features of our site that still require you to log in for privacy reasons.

Forget your password? Having trouble signing in?

Why should I
sign up for WebMD?

With a WebMD Account you can:

Track your way to weight loss success
Manage your family's vaccinations
Join the conversation

See more benefits Sign Up

Why WebMD?

My WebMD

Show Menu

Facebook Twitter Pinterest

WebMD Home

My Answers Profile

Ask Your Question

WebMD Answers

Featuring Experts From

See all

Back to List

Next Question

Didn't find your answer? Post to
WebMD Experts and Contributors

Does sunscreen with an SPF over 30 actually work, or are the claims for anything over 30 just hype?

Answers From Experts & Organizations (1)

Following Unfollow

SUCCESS!

Susan Evans, MD

Dermatology

Beverly Hills Plastic Surgery and Skin Care

273 Answers
1,598 Helpful Votes
20 Followers

SPF 30 is effective because it provides protection from both UVA and UVB rays. When SPF is greater than 30, it should mean that in addition to chemical sunscreens, the makers have included titanium dioxide and/or zinc oxide, which provide physical barriers, and are actual sunscreens. Irrespective of the SPF, you’ll need to reapply the sunscreen every 2 hours.

This answer should not be considered medical advice...This answer should not be considered medical advice and should not take the place of a doctor’s visit. Please see the bottom of the page for more information or visit our Terms and Conditions.

Posted:

| Report This

Was this helpful?

Yes No

Thanks for your feedback.

1 of 2 found this helpful

Read the Original Article: Antiaging Lifestyle Tips: Ask the Dermatologist

1 Answer

Next Question:

Does sunscreen with an SPF over 30 actually work?

Got Your WebMD Answer?

Next Steps:

Didn't find what you were looking for? Ask WebMD Experts and Contributors

Ask Your Question

WebMD Answers

Featuring Experts From

See all

Important: The opinions expressed in WebMD User-generated content areas like communities, reviews, ratings, blogs, or WebMD Answers are solely those of the User, who may or may not have medical or scientific training. These opinions do not represent the opinions of WebMD. User-generated content areas are not reviewed by a WebMD physician or any member of the WebMD editorial staff for accuracy, balance, objectivity, or any other reason except for compliance with our Terms and Conditions. Some of these opinions may contain information about treatments or uses of drug products that have not been approved by the U.S. Food and Drug Administration. WebMD does not endorse any specific product, service, or treatment. Do not consider WebMD User-generated content as medical advice. Never delay or disregard seeking professional medical advice from your doctor or other qualified healthcare provider because of something you have read on WebMD. You should always speak with your doctor before you start, stop, or change any prescribed part of your care plan or treatment. WebMD understands that reading individual, real-life experiences can be a helpful resource, but it is never a substitute for professional medical advice, diagnosis, or treatment from a qualified health care provider. If you think you may have a medical emergency, call your doctor or dial 911 immediately.