Comments on: Know Your Skin Care: Period After Opening (PAO)

By: Fiona

Fiona — Sun, 18 Oct 2015 00:45:23 +0000

Hi Stella,

I’ve covered this at the “Expiry Date Reached” section. Here’s the snippet:

Like I said earlier some product do comes with expiry date stated. If let’s say the newly opened product expiry is stated Dec-13, by all mean you should stop using this product when the date reached. What if you only opened the product on Jun-13 and the PAO stated is 18 months? It means you still need to stop using BY Dec-13. The easiest to remember is “whichever comes first”.

So to answer your question, the product you mentioned has expired therefore you should not use it at all.

Hope this helps 🙂

By: Stella

Stella — Sat, 17 Oct 2015 16:39:13 +0000

May I know if the item not opening before but expired. I have seen the symbol of 12m so the item still can be used? actually it’s a body mask and bought from beauty fair but expiration date on last month.

By: Fiona

Fiona — Thu, 26 Dec 2013 11:51:06 +0000

Interestingly, I'm curious about manufacturing date when I first started with proper skin care routine. I notice some product doesn't come with either manufacturing date or expiring date. All was provided is just a batch code. I've since then know how to read Clarins code and all brands under Suria Meriang aka Estee Lauder Group of Companies well. But some brand which I seldom buy or miniature that I bought online only comes with batch code. Therefore I found a way to identify these codes and I've even blogged about it back in 2011, 6-months after I started a proper skin care routine. Here's the link https://street-love.net/2011/09/check-your-cosmetic-skin-care-expiry.html. Hope it's useful to you too. More technical post soon :)

By: bugs

bugs — Thu, 26 Dec 2013 08:50:32 +0000

I like to finish using my skincare before opening new ones too. So, this is not something I need to worry much. Instead, I’m more interested to know the manufacturing date of the product so that I know which product from my stash to use first. Some company do have easy to read manufacturing month and year on the product such as Clinique, Clarins and SK-II … Some would have a sticker on the box. However, some don’t. And when I ask, it’s either the staff is reluctant to share the info with customer or they themselves do not bother to know. Sad.

I am hoping that you share your knowledge on this with us in the future if it interests you as I really like to learn more.

Thank you for this PAO topic, it is very informative and especially good for young users(readers).