What is SPF in a sunscreen?
SPF stands for sun protection factor. The SPF number tells you how well the product will protect you from UVB, the burning rays of the sun. (Most sunscreens also absorb ultraviolet “A” rays, or UVA.) The larger the SPF number, the greater the amount of protection. Everyone should use a sunscreen with an SPF of at least 15. If you have had a skin cancer or precancers, you should use a sunscreen with an even higher SPF. Many of the new sunscreens have SPFs of 30, 45, or higher. I don’t burn very often. Does this mean I can use a sunscreen with a low SPF? If you were only trying to avoid a sunburn, the answer would be “yes.” But protection from sunburn is not the most important reason for wearing sunscreen. You want to reduce damage from the sun. Your skin can be harmed by constant sun exposure, whether or not you see a burn. Remember, a sunburn is an immediate reaction, but damage from the sun occurs over a lifetime. If you have had a skin cancer or precancers, you should use an SPF of 1
Related Questions
- Can I layer the NIA 24™ Sun Damage Prevention 100% Mineral Sunscreen SPF 30 with the NIA 24™ Skin Strengthening Complex and if so, which product should I use first?
- Can I layer the Sun Damage Prevention 100% Mineral Sunscreen SPF 30 with the Skin Strengthening Complex and if so, which product should I use first?
- What is SPF in a sunscreen?
