UVA / UVB
Knowing the difference between UVA and UVB rays can help you understand what each ray does in terms of skin damage. For example, UVA rays are constantly present no matter the season or weather and cause sun spots, leathery skin, and wrinkles. On the other hand, UVB rays are linked to skin cancer and sunburn and are stronger in the warmer months. All sunscreens protect against UVB rays but only recently started including UVA protection. When shopping for SPF, look for one that says UVA/UVB or broad-spectrum coverage on the bottle for protection from both UV types.