Here are some simple tips for sunscreen selection and use from CNN:- Use a sunscreen with a minimum of SPF 15 and a maximum of SPF 50. SPF 15 can block 93% of incoming UVB rays. SPF 30 blocks 97%. SPF 50 blocks 98%.
- Make sure labels list both UVA and UVB protection
You get exposed to both UVA and UVB light:
UVB light is the light that Burns (causes sunburn)
UVA light as the light that Ages the skin (wrinkles, etc.)
- Avoid products containing oxybenzone and retinyl palminate. They may get absorbed through the skin and may increase cancer risk
- Choose lotions versus spray sunscreens for a more evenly distribution
- Remember to apply at least 2 ounces of lotion (about a shot glass full). Reapply every 2 hours. Reapply after swimming or heavy sweating.
How to apply sunscreen - NHS video:
References:
Avoid sunscreens with potentially harmful ingredients, group warns. CNN, 2012.
How to avoid damaging ultraviolet light - CCJM launches "Patient Page" similar to JAMA
Image source: OpenClipArt.org, public domain.