The revolutionary product I recommendis designed for all skin types, including the most sensitive skin. It's patented, waterproof, oil-free formula smoothes easily into your skin and absorbs quickly, without leaving a sticky residue. Soothing and moisturizing, it does not irritate the skin. It has a special ingredient system that contains antioxidant vitamins and botanicals. The formula offers BOTH UVA and UVB protection and adds an extra defense against premature skin aging. This protection is not offered by all sunscreens.
Ask any dermatologist what the number one skin care essential is, and they'll say a quality sunscreen with a high level of sun protection. Nothing is more important to the quality and health of your skin.
A bit of information about SPF. The SPF provides a multiple for how much longer you can safely stay in the sun when wearing the product. If you have very fair skin and you would typically burn in 5 minutes, an SPF 30 would provide you with 150 minutes in the sun before burning. If you reapply at the end of the 150 minutes, you don't get another 150 minutes because your skin has already received as much sun as it can safely handle, and you should go indoors. ( High SPF is really critical for this type of person, in particular, because if the same person had only used SPF 15, he/she would only have 75 safe minutes in the sun. )
At the other end of the spectrum, if you have darker skin and it would typically take 12 minutes for your unprotected skin to burn, an SPF 30 would provide 360 safe minutes in the sun (6 hours). For this person, reapplication IS important, because over the course of the 6 hours, some product will probably rub off/wear off due to sweating or swimming.
Be sure to add asunscreento your every day skin care regime.