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Amazing discovery! Calamine lotion as sunscreen?

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Yesterday I was reading the ingredients on a bottle of Calamine lotion and was surprised to find out that Zinc Oxide was one of them.

All ingredients are non-comedogenic and non-irritating (all had a score of 1 or less, which is great!) except for two which were not listed (they are in orange). I used these sites to determine if the ingredients were safe -




But the sites did say that if an ingredient is not listed, then it is safe to use on acne-prone skin. The ingredients are as follows:

MEDICINAL INGREDIENTS: Calamine 76mg/ml, Zinc Oxide 76 mg/ml.

NON-MEDICINAL INGREDIENTS: Purified Water, Glycerin, Bentonite, Calcium Hydroxide, Methyl P-Hydroxy benzoate.

Well for you all who don't know, Zinc Oxide (ZnO) is the active ingredient in a couple of sunscreens, including the one that Dan uses - http://click.linksynergy.com/fs-bin/click?...e=10&subid= .

But the concentration of ZnO in the sunscreen is 3%; the concentration of ZnO in Calamine lotion is 7.5%!!! (10mg/ml = 1%). Also the compound Calamine is composed partially of Zinc.

So my question is can I mix/is it safe to mix a little Calamine lotion in my moisturizer to make it a sunscreen? I know that it may be a little white depending on the ratio of moisturizer to Calamine lotion, but I've yet to find that out.

Also the Calamine lotion will help soothe irritated skin, even if it's broken or chapped!

And finally (I just noticed this after glancing at the ingredients one more time), the last ingredient on the list - Methyl P-Hydroxy benzoate, has benzoate in it, which a derivative of benzoic acid, and similar in its shemical structure to benzoyl peroxide!!!

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I've wondered about doing the exact same thing - adding calamine to moisturizer for sunscreen - but no idea how much is needed, etc.

I'm brand new here and curious there's so little about sunscreen. Dan recommends the Neutrogena Clear Face but it has oxybenzone, which I prefer to avoid. Any other recommendations on sunscreen or point me to a thread?

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