zinc oxide the an important ingredient that protects you from the sun. it's the best ingredient, and, its better than other ingredients.
make sure that when you go shopping for sunscreen, that you read the ingredients, and make sure the sunscreen contains zinc oxide.
Sunscreen
A 21 year old girl, or anyone, should use a sunscreen that has a SPF of at least 15. The sunscreen should contain an ultraviolet ray blocker, sunscreen, and moisturizer. The brand does not matter because they all have the same ingredients. Coppertone is a brand that has a good reputation.
If you put way to much sunscreen on you could die!
There are only six ingredients in Bare Escentuals makeup, each with their own effects (ranging from acting as a sunscreen, to keeping your skin dry and smooth). The ingredients are: Titanium Dixide, Cornstarch, Zinc Oxide, Seed oils, Mica, and Other pigments!
No, perfumes do not have sunscreen.
I did a search for your question about the "safest brand of sunscreen" and I found a couple of pages that may have the answer you need. The first link has a long alphabetical list of sunscreens that provide broad-spectrum (UVA and UVB-sunburn) protection with fewer hazardous ingredients. The second link talks about which ingredients to look for and avoid. http://breakingnews.ewg.org/2011sunscreen/best-sunscreens/best-beach-sport-sunscreens/ http://breakingnews.ewg.org/2011sunscreen/top-sun-safety-tips/ http://www.scribd.com/doc/11724413/Safe-Sunscreen
Sunscreens are extensively tested, and the diffusion of sunscreen ingredients through the skin is very low. Sunscreens, depending on the ingredients, might cause a handful of cancers in different organs per million people exposed, over their lifetimes. I wouldn't be surprised if the constant efforts at developing new substances for sunscreen protection (or just makeups) was not fundamentally responsible for the acceleration of the estrus cycle in white human females, but that is a different question. UV rays cause cancer in the thousands, per million people exposed, *if* some sunscreens or protection is used. And that number goes up if no protection is used.
This may vary depending on the manufacturer. Some ingredients used in different varieties of organic sunscreen are green tea, zinc oxide, titanium dioxide, lavender, aloe vera, chamomile, and vitamin E.
yes, according to http://www.thegreenguide.com/doc/103/sunscreenssc
Some of the benefits of facial sunscreen is to prevent the skin from burning, it slows down wrinkles and prevents premature aging of the skin, prevents discolorations and brown spots.
working sunscreen
Sunscreen. Lots of sunscreen.