How long will my dream matte mouse foundation last once i've opened it?

Look on the label of the foundation.





There should be a little picture of a pot with a number and an 'm' after it, ie: 12M = 12 months.





This indicates how long the product will last for once it has been opened, basically it's use-by date.





This is true for all cosmetics, but the use-by date varies from product to product. xxHow long will my dream matte mouse foundation last once i've opened it?
if you keep the lid on then refer to the PAO (period after opening) symbol like these


http://en.wikipedia.org/wiki/Period-afte鈥?/a>





it is like a little picture of a pot with a number beside it which is how long you can safely use it for after opening. But yeah, they do dry out if u leave the lid off!How long will my dream matte mouse foundation last once i've opened it?
Depending on how much you use, it could last for months. I've been using this stuff for forever, and I LOVE it's smooth texture. I normally keep mine for about a month and a half to two months, just because my skin tone is always changing and stuff like that.





After a couple months, though, it looses its creaminess and gets kind of... weird. I dunno. It's not necessarilly bad, but it's as if all of the air that's been puffed into it to keep it so lightweight has sort of... left? I guess the best analogy is like a coke going flat. It still works okay, but its quality definitely decreases.





But yeah, like I said, about one and a half to two months should do it.
iv had mine for about 2 months, but it started to go a bit wierd, so i wouldn't recomend using it after that amount of tmie really, plus the bacteria in it could give you spots!!! xoxo
Foundation is usually good for 6 weeks. If you leave the cap off of your foundation though, it will ruin faster.
it will last for a while, but when you forget to put the cap back on it will dry out