Science Friday Understanding Sunscreen Ingredients And Which Ones You Need
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Jul 3, 2025 Dr. Jonathan Ungar, a dermatologist and director at Mount Sinai's Waldman Melanoma and Skin Cancer Center, joins the hosts for an enlightening discussion on sunscreen. He breaks down the differences between mineral and chemical sunscreens, revealing their effectiveness against UV rays. Listeners learn about common skin sensitivities and the importance of patch testing. Ungar also highlights the outdated U.S. sunscreen regulations and the need for scientific input to drive changes. Practical advice on sunscreen application and debunking vitamin D myths adds to the informative session.
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Sun's UV Rays Cause Skin Damage
- UV radiation from the sun damages skin cells and DNA, which can lead to skin cancer.
- Both UVA and UVB rays penetrate the atmosphere and cause different types of harm to the skin.
Different UV Rays Different Harm
- UVB rays mainly cause skin cancer while UVA rays contribute to skin aging.
- Both types of ultraviolet light harm the skin but in distinct ways.
Choose Any Sunscreen, Just Use One
- Use either mineral or chemical sunscreens to protect against UV damage; both are effective.
- Avoid skipping sunscreen due to fears about chemical ingredients as UV damage is a serious skin cancer risk.