try hydrogen peroxide

Sunscreens are like gel and cream. They are more popular. Chemicals found in sunscreens include PABA, Benzophenones, Cinnamates, and Salicylates.

Sunblock gets UV rays and the sunblock reflects them. Chemicals in sunblocks include Titanium dioxide and zinc oxide.

reference http://beauty.about.com/od/summertanning/f/sunscreenblocks.htm

yes

yes

Skin cancer generally takes many years to develop. Cancer does not suddenly appear in the middle of a burn; it does, however, develop because of sun exposure in the past. It sounds like you may have developed a worsening of the burn you already had. The serious type of skin cancer typically looks more like an irregularly shaped mole that is dark, not a "red patch." If you are concerned, though, you can certainly have your skin checked out. Hope this helps! Dr. B.

Sunblock is made to block Ultraviolet radiation. Nuclear radiation, or Gamma radiation, is much more energetic and will easily penetrate zinc oxide sunblock, walls, and most everything else except several feet of concrete or a few inches of lead. In addition to Gamma radiation, nuclear reactions also give off less energetic particles called Alpha and Beta particles which can be inhaled and cause damage, which is why the Japanese are wearing wet wipes inside their face masks.

Usually a higher SPF sunblock is better and healthier, for example SPF30 is better and more protective than SPF8. At a certain point there is no more benefit to higher numbers, so it's not better or healthier to get a higher number, some people say this limit is SPF30 and others say SPF50.

The skin care products we use are absorbed by the skin. Rubbing an oil blotting paper over your skin will not remove the sunblock.

Yes, it is fine. If you have fair skin you can wear an even stronger SPF.

I have been using Himalaya Herbals Sunscreen lotion the past 3 summers and I can feel the real difference on my face after applying this sunscreen lotion. It applies smoothly and is safe to use in water.