Maybe you should go back and reread about the sun's UV effects to your skin! Read more about: The Sun Tan>> The effects aren't just what you see today … they are cumulative and the skin damage and cancer appear years later. A UV tan is the sign of damage or injury to your skin. Having what is referred to as a base tan does not offer protection against further sun damage. A dark tan on fair skin offers only an SPF of about 4. There is no such thing as a safe tan.
 
Use common sense and practice moderation, gage your exposure and be prudent while outdoors. To limit your exposure stay out of the sun between 10 AM and 4 PM, when 60% of the day's UV rays reach the earth. Stand in the shade or use an umbrella to avoid sun exposure during midday. When in the sun, wear a wide-brimmed hat and tightly woven clothes to shield exposed skin. Complete the ensemble with UV-screening glasses, because UV radiation also is linked to cataract development and retina damage. How well you prevent premature aging and wrinkling, damage to the distribution of keratin proteins in your skin and cancer, is dependent on how well you avoid exposure to UV radiation. There really is no such thing as a safe UV tan.
Be sure to use a sun block or a broad spectrum sunscreen with a sun protection factor (SPF) of 15 or greater. Sunscreens either block or absorb UV rays.  Opaque creams, like the white zinc oxide cream you see lifeguards putting on their noses, block and scatter UV rays. Sun blocks contain titanium dioxide and/or zinc oxide and protect the skin by reflecting the UV rays. 
Broad-spectrum sunscreens of SPF 15 or greater protect by absorbing UV radiation. There are many chemicals that absorb UV radiation, the most common used initially was PABA (para-aminobenzoic acid).  People with sensitive skin should be aware that PABA can sometimes cause irritation or an allergic reaction. There are 17 ingredients approved for use in sunscreens in the U.S. and 25 approved for use in Europe. Other chemicals used in suncreens are:
 Cinnamates absorb UVB.
 Benzophenones absorb UVA.
 Anthranilates absorb UVA and UVB.
 
 All sunscreens are labeled with an SPF, or Sun Protection Factor. The SPF acts like a multiplying factor. If you would normally be OK in the sun for 10 minutes and you apply an SPF 10 sunscreen, you will be OK in the sun for 100 minutes. In order for the sunscreen to work, however, you have to apply plenty and it has to stay on. You should apply it about half an hour before going out in the sun (or the water) so it can bind to your skin - if you don't, then it is very easy for the sunscreen to wash off.
The SPF rating, by the way, applies only to UVB radiation.
If you end up looking like these guys, give us a call at Airbrush Tanning Florida. We can make tan lines, or make tans lines disappear!!! You should also educate yourself on other options to achieving that golden tan.
          
 
The organics include widely used ingredients such as octyl methoxycinnamate (OMC), 4-methylbenzylidene camphor (4-MBC), avobenzone, oxybenzone, and homosalate. They work primarily by absorbing UV light and dissipating it as heat. Formulators often combine inorganic and organic sunscreens for a synergistic effect. In fact, that is how most are capable of achieving very high SPF--sun protection factor--ratings. SPF is a measure of how effectively a sunscreen in a formulation limits skin exposure to the UV-B rays that burn skin. The higher the number, the more protection a sunscreen formula affords against sunburn.
However, the SPF system does not provide an objective measure of protection against UV-A radiation. And although sunscreen formulators do say their products contain broad-spectrum protection, a U.S. consumer has no clear way to compare the UV-A protection offered by one product with another. Europe has an unofficial method, whereas Japan and Korea have a system in place.
Among the inorganics, zinc oxide offers much better UV-A protection than TiO2. Among the U.S.-approved organics, avobenzone offers the greatest UV-A protection, but others offer some protection as well, depending on their absorption spectrum. A problem with inorganics is that they may leave a haze on the skin. Generally, the oil in a sunscreen formula helps wet the inorganic particles and gives the optical effect of transparency. But use of a formula with high levels of TiO2 could remind you of that veteran with the white blob on his nose.