Only UVB and UVA rays ever reach the earth’s surface and therefore your skin.
UV Radiation and the Skin
UVA rays penetrate more deeply into your skin and are primarily responsible for photoaging and tanning, whereas UVB rays don’t penetrate as deeply, have higher energy, and are responsible for sunburns.
UVA versus UVB
An easy way to understand the difference between UVA and UVB is to relate UVA to “light” and UVB to “heat”. Look at the graph above. Notice that UVA is fairly constant throughout daylight hours, whereas UVB gathers intensity with the warmth of the sun, peaking at mid-day, and declines again.
Skin Cancer Is More Prevalent Than All Other Forms of Cancer Combined!
BCC and SCC
Up to 90% of age-related changes you see in your skin are caused by UVA radiation.
While UVB rays are absorbed in the epidermis, UVA penetrates deep into the dermis and damages the collagen, elastin and other fibers that give skin its structure and a smooth, youthful appearance. UVA also reduces your skin’s ability to repair itself and eventually will result in wrinkles, dark spots and sagging leathery skin. The best protection against photoaging (aside from staying out of the sun altogether) is to use and reapply a broad-spectrum sunscreen daily. How are you going to know when to reapply? By using SunFly UV Indicator Stamps of course!
Not All Sunscreens Are Created Equal
Did you know your skin is the largest organ in your body and what you put on it can be absorbed?
According to the Environmental Working Group there are 292 brands and over 1,700 sun protection products sold in the U.S. market today. Over 80% of these products contain worrisome ingredients including oxybenzone (a hormone disruptor) and retinyl palmitate (linked to skin cancer).
In fact, each year EWG rates sunscreens and puts out “best” and “worst” lists based upon the safety of their ingredient lists. SunFly Clear Zinc Sunscreens will be on EWG’s best list with their highest safety rating of 1.