Q: What is the definition of SPF:
A: SPF stands for Sun Protection Factor. SPF numbers range from as low as SPF2 to SPF100.
Q: Why have we chosen to use an SPF of 30 and not anything higher
A: Most of your High-End Premium Sunscreens use SPF 30. The reason is that using over a #30 is basically an overkill. Above SPF 45-90 requires more chemicals to increase sun ray blockage.
This is like putting on 20 pair of Irritating Wool Gloves on a Cold Day to protect your hands from Frost Bite, when one good pair of well insulated gloves would keep your hands and fingers toasty warm. Higher SPF’s use nanotechnology and/or chemicals that almost always sting the eyes, are very irritating to the skin which causes skin flare-ups for anyone with sensitive skin or persons having any other pre-existing skin conditions such as roseca, psoriasis, eczema etc.
Q: Are all sunscreens equally effective against UV radiation?
A: No. Some sunscreens protect against only one type of ultraviolet radiation: ultraviolet-B (UVB). Others protect against both types of ultraviolet radiation that reach earth’s atmosphere from the sun: Ultraviolet-B and ultraviolet-A (UVA).
Sunscreens that protect against both UVA and UVB, are thus classified as “broad spectrum,” Sunscreens and are recommended for everyone.
Ultra-SUN-SAFE is a broad spectrum sunscreen with both UVB and UVA.