Cosmetics don’t last forever! Once they have been opened bacteria from the air, hands, brushes etc can soon multiply at an alarming rate.
Have you noticed the little symbols like a pot with an open lid on the labels of most cosmetic products these days?
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Written on the pot is a number and the letter M. This number is the number of months the product will keep once it’s been opened. So if the pot symbol says 6 M then after 6 months through the product away.
This is especially important with mascara, eyeliner and other eye products as eye infections can be very unsightly and painful and can even be very serious.