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about vitamine D thing:
http://www.cosmeticcop.com/learn/art...ER=SKIN&ID=149
exert:
Quote:
The same article also mentioned a 1997 study published in the Journal of the National Cancer Institute. It concerned patients with xeroderma pigmentosa (a disease that causes multiple skin cancers in persons exposed to even small amounts of UV radiation). The study demonstrated that these patients, despite avid sun avoidance and constant UV protection, still had normal levels of vitamin D over a period of several years. There is also the issue that no sunscreen, regardless of active ingredients or how often or liberally it is applied, can provide 100% protection from UV radiation. The tiny amount of UVB light that sunscreens do not shield is enough to begin the synthesis of vitamin D (though depending on your skin color and climate, supplemental vitamin D will likely still be necessary). about oxybenzone:
Quote:
Dear Paula,I am thrilled that your products are available in Europe now-thank you! I have purchased the Essential Non-Greasy Sunscreen SPF 15. I noticed that, per European Union regulations, there is a warning for the oxybenzone active sunscreen in this product. I read a little about this ingredient on the Internet and I must say I am a bit worried now. Is it safe? Does oxybenzone interfere with your hormones?
Diana, via email search
Dear Diana,
I am pleased to hear that you are as excited as we are about the launch of Paula's Choice in the European Union. In terms of your concern about oxybenzone, there is nothing for you to be worried about, as far as the research goes, for many reasons.
From what I can tell, there has been some alarmist and false information floating around on the Internet about many sunscreen ingredients. However, most of these risk-related comments are either not supported by published research or the only research performed was in animal or in vitro studies. As for real use on humans, the research is quite reassuring. The most current research I've seen about oxybenzone (as well as other sunscreen ingredients) comes from the Therapeutics Research Unit at the University of Queensland Princess Alexandra Hospital in Brisbane, Australia, and was published in Skin Pharmacology and Physiology (July-August 2005, pages 170-174). This extensive study noted that "The penetration and retention of five commonly used sunscreen agents (avobenzone, octinoxate, octocrylene, oxybenzone and padimate O) in human skin was . too low to cause any significant toxicity to the underlying human keratinocytes [skin]." And the researchers surmised that penetration beyond the skin cells was undetectable.
It seems that all sunscreen ingredients (both organic and inorganic), when subject to vitro research (controlled laboratory conditions in petri dishes), show a potential for some problems; however, these problems do not seem to arise in actual usage. Research is ongoing and I am following it closely. For now, the benefits of using sunscreen far outweigh any potential risk from sunscreen ingredients.
http://www.cosmeticcop.com/learn/art...ER=SKIN&ID=149
exert:
Quote:
The same article also mentioned a 1997 study published in the Journal of the National Cancer Institute. It concerned patients with xeroderma pigmentosa (a disease that causes multiple skin cancers in persons exposed to even small amounts of UV radiation). The study demonstrated that these patients, despite avid sun avoidance and constant UV protection, still had normal levels of vitamin D over a period of several years. There is also the issue that no sunscreen, regardless of active ingredients or how often or liberally it is applied, can provide 100% protection from UV radiation. The tiny amount of UVB light that sunscreens do not shield is enough to begin the synthesis of vitamin D (though depending on your skin color and climate, supplemental vitamin D will likely still be necessary). about oxybenzone:
Quote:
Dear Paula,I am thrilled that your products are available in Europe now-thank you! I have purchased the Essential Non-Greasy Sunscreen SPF 15. I noticed that, per European Union regulations, there is a warning for the oxybenzone active sunscreen in this product. I read a little about this ingredient on the Internet and I must say I am a bit worried now. Is it safe? Does oxybenzone interfere with your hormones?
Diana, via email search
Dear Diana,
I am pleased to hear that you are as excited as we are about the launch of Paula's Choice in the European Union. In terms of your concern about oxybenzone, there is nothing for you to be worried about, as far as the research goes, for many reasons.
From what I can tell, there has been some alarmist and false information floating around on the Internet about many sunscreen ingredients. However, most of these risk-related comments are either not supported by published research or the only research performed was in animal or in vitro studies. As for real use on humans, the research is quite reassuring. The most current research I've seen about oxybenzone (as well as other sunscreen ingredients) comes from the Therapeutics Research Unit at the University of Queensland Princess Alexandra Hospital in Brisbane, Australia, and was published in Skin Pharmacology and Physiology (July-August 2005, pages 170-174). This extensive study noted that "The penetration and retention of five commonly used sunscreen agents (avobenzone, octinoxate, octocrylene, oxybenzone and padimate O) in human skin was . too low to cause any significant toxicity to the underlying human keratinocytes [skin]." And the researchers surmised that penetration beyond the skin cells was undetectable.
It seems that all sunscreen ingredients (both organic and inorganic), when subject to vitro research (controlled laboratory conditions in petri dishes), show a potential for some problems; however, these problems do not seem to arise in actual usage. Research is ongoing and I am following it closely. For now, the benefits of using sunscreen far outweigh any potential risk from sunscreen ingredients.
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