“Many women do not take notice of use-by dates on their cosmetics, which can lead to infections. ‘Natural and organic products containing fewer or no preservatives have a shorter shelf-life than conventional products and therefore potentially harbour higher levels of bacteria.’
Many manufacturers add a ‘Period After Opening’, or PAO symbols to packaging as advice on when they will expire. Customers can simply look for the jar symbol, along with a figure indicating how many months the product will last.” – Daily Mail
You may be a pro at squeezing out that final glob of conditioner, the last smear of mascara and the remaining drops of perfume, but do you have an environmentally responsible solution for trashing the empty container? TerraCycle® created the Personal Care and Beauty Brigade®, a free recycling program for hair care, skin care and cosmetic product packaging that makes tote bags, coin pouches or pencil cases out of waste like:
Hair care packaging such as shampoo bottles and caps, conditioner bottles and caps, hair gel tubes and caps, hair spray bottles and triggers, and hair paste plastic jars and caps
Skin care packaging such as lip balm tubes, face soap dispensers and tubes, face lotion bottles, tubes and plastic jars, body wash containers, soap tubes and dispensers, body lotion dispensers and bottles, shaving foam tubes (no cans), and hand lotion bottles and tubes
Cosmetics packaging such as lipstick cases, lip gloss tubes, mascara tubes, eye shadow cases, bronzer cases, foundation packaging and bottles, powder cases, eyeliner cases, eyeliner pencils, eye shadow tubes, concealer tubes, concealer sticks, and lip liner pencils.
Also, M·A·C Cosmetics accepts returns of its primary packaging through the Back to M·A·C Program. By returning six  M·A·C primary packaging containers to a M·A·C counter or M·A·C Cosmetics online, you’ll receive a free M·A·C lipstick of your choice.