The truth about SPF
What does broad spectrum sunblock really mean?
Broad Spectrum (often also called Full Spectrum) means that the sunscreen is designed to protect the skin from both UVA and UVB rays. The UVA rays can prematurely age the skin, causing wrinkles, discolouration, and age spots. The UVB rays can burn the skin. Overexposure to both UVA and UVB rays can cause skin cancer. With the use of Titanium Dioxide and Zinc Oxide the UV radiation is reflected into the atmosphere ensuring broad spectrum protection from sun damage. CARA Daily Solar Guard contains Micronized Titanium Dioxide along with Sodium Hyaluronate making it a preferred broad spectrum sunblock.
What does SPF stand for?
TheSun Protection Factor is a measure of how the sunscreen deflects the UVB rays. The SPF is calculated based on how long it takes to sunburn the skin with the application of a sunscreen compared to non-treated skin.
Does a higher SPF give more protection?
HigherSPF numbers such as 75 or 100 mislead people into believing they have greater protection. In order to have broad spectrum protection the UVA should be at least 1/3 of the UVB protection. High SPF sunscreens offer far greater UVB protection than UVA thus portraying a false sense of broad protection. For example, SPF 30 does not mean that you are provided with twice the protection than SPF 15. Always look for broad or full spectrum sun blocks to protect you from both UVA and UVB damage.