Bathroom drawers around the world are straining under the weight of half-used lipsticks, barely touched eyeshadow palettes and dried-up mascaras that are usually months (if not years) past their expiry date. These products, once finally discarded by their owners, have typically ended up in landfill — adding to the already enormous strain on the environment. The good news is you can now recycle your used beauty, hair and skincare products, and it won't cost you a cent.