Shopping Essentials: Everything you need to know about sunscreen, according to a top Canadian dermatologist
What’s the difference between ultraviolet A and ultraviolet B ?
“UVA rays penetrate more deeply into the skin and are far more plentiful in sunlight than UVB. [They] cause premature skin aging and skin cancer,” says Barankin, adding that UVA rays, “also causes tanning and can penetrate glass and clouds. UVA is connected to the “broad-spectrum protection” you see on sunscreen labels.”
Dr. Barankin provides a mnemonic trick for remembering the difference between UVA and UVB, “A is for aging” and “B is for burning.”Article content “UVB rays cause sunburns ; traditional sunscreens are best at blocking UVB. UVB is connected to the [sun protection factor] SPF, [and they] don’t penetrate glass,” Barankin says.Yes. Dr. Barankin emphasizes that it’s critical to protect from both and put extra emphasis on blocking out those UVA rays. However, not all sunscreens protect from UVA and UVB rays.
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