Comments on: Expiration Dates on Cosmetics http://thebeautybrains.com/2009/05/10/expiration-dates-on-cosmetics/ Cosmetic chemists answer your beauty product questions! We are a group of cosmetic scientists who understand what the chemicals used in cosmetics really do, how products are tested, and what all the advertising means. Sat, 21 Nov 2009 07:38:17 -0500 http://wordpress.org/?v=2.8.6 hourly 1 By: Airbrush Makeup http://thebeautybrains.com/2009/05/10/expiration-dates-on-cosmetics/comment-page-1/#comment-38204 Airbrush Makeup Wed, 13 May 2009 12:27:17 +0000 http://thebeautybrains.com/?p=5409#comment-38204 OH ... I never think about it after opening ...I never think that it can change its value.. thanks for sharing.. OH … I never think about it after opening …I never think that it can change its value.. thanks for sharing..

]]> By: Resveritol http://thebeautybrains.com/2009/05/10/expiration-dates-on-cosmetics/comment-page-1/#comment-38144 Resveritol Mon, 11 May 2009 13:13:59 +0000 http://thebeautybrains.com/?p=5409#comment-38144 Must admit I have never even thought about the shelf life of products I use. I just use them until I finish them. I guess that's not such a good idea. Must admit I have never even thought about the shelf life of products I use. I just use them until I finish them. I guess that’s not such a good idea.

]]> By: Sophie http://thebeautybrains.com/2009/05/10/expiration-dates-on-cosmetics/comment-page-1/#comment-38123 Sophie Mon, 11 May 2009 02:47:16 +0000 http://thebeautybrains.com/?p=5409#comment-38123 Why don't you look them up yourself? Here's a few sources took me all of about ten minutes to locate. http://jama.ama-assn.org/cgi/content/full/286/7/807?maxtoshow=&HITS=10&hits=10&RESULTFORMAT=&fulltext=soy+bean+emollient+estrogen&searchid=1&FIRSTINDEX=0&resourcetype=HWCIT http://jama.ama-assn.org/cgi/content/full/286/7/807?maxtoshow=&HITS=10&hits=10&RESULTFORMAT=&fulltext=soy+bean+emollient+estrogen&searchid=1&FIRSTINDEX=0&resourcetype=HWCIT http://content.nejm.org/cgi/content/short/356/24/2541 Why don’t you look them up yourself? Here’s a few sources took me all of about ten minutes to locate.

http://jama.ama-assn.org/cgi/content/full/286/7/807?maxtoshow=&HITS=10&hits=10&RESULTFORMAT=&fulltext=soy+bean+emollient+estrogen&searchid=1&FIRSTINDEX=0&resourcetype=HWCIT

http://jama.ama-assn.org/cgi/content/full/286/7/807?maxtoshow=&HITS=10&hits=10&RESULTFORMAT=&fulltext=soy+bean+emollient+estrogen&searchid=1&FIRSTINDEX=0&resourcetype=HWCIT

http://content.nejm.org/cgi/content/short/356/24/2541

]]> By: Ink http://thebeautybrains.com/2009/05/10/expiration-dates-on-cosmetics/comment-page-1/#comment-38120 Ink Sun, 10 May 2009 20:57:11 +0000 http://thebeautybrains.com/?p=5409#comment-38120 Actually, it's good to know the period after which the product is likely to have become contaminated or non-effective (e. g., oxidized, dried out). It always reminds me to use antioxidant products quickly, and to throw away eye products regularly. There are two main problems: as MO already mentioned, it IS pretty hard to remember when you got the stuff. 6, 12, or 36 months are likely deadlines, so you might be able to recall the information for at least some products. The other thing is that some companies don't produce sealed and/or airtight containers in the first place. In this case I usually don't keep the product for the entire period of recommended use (or don't buy the product at all). I guess a combination of a proper expiry date and a recommended "use after opening" period would be best. After all, an eye pencil has a reasonable shelf life but should be thrown out comparatively soon after starting to use it, while even three months of use is too much if the product wasn't fresh in the first place. Actually, it’s good to know the period after which the product is likely to have become contaminated or non-effective (e. g., oxidized, dried out). It always reminds me to use antioxidant products quickly, and to throw away eye products regularly.

There are two main problems: as MO already mentioned, it IS pretty hard to remember when you got the stuff. 6, 12, or 36 months are likely deadlines, so you might be able to recall the information for at least some products. The other thing is that some companies don’t produce sealed and/or airtight containers in the first place. In this case I usually don’t keep the product for the entire period of recommended use (or don’t buy the product at all).

I guess a combination of a proper expiry date and a recommended “use after opening” period would be best. After all, an eye pencil has a reasonable shelf life but should be thrown out comparatively soon after starting to use it, while even three months of use is too much if the product wasn’t fresh in the first place.

]]> By: MO http://thebeautybrains.com/2009/05/10/expiration-dates-on-cosmetics/comment-page-1/#comment-38108 MO Sun, 10 May 2009 07:42:12 +0000 http://thebeautybrains.com/?p=5409#comment-38108 Wow! I always thought its a European Measure for quantity; like fl oz in the US. Thank You for the post. The problem is I don't remember when exactly I opened the stuff. Wow! I always thought its a European Measure for quantity; like fl oz in the US.

Thank You for the post. The problem is I don’t remember when exactly I opened the stuff.

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