Check the shelf life of your products. This information is normally indicated somewhere on the product container. For example, 6M means that the product can be kept for up to 6 months after you open it. After that, you should discard the product.
Avoid using a product that has been exposed to heat for a long period or that shows signs of expiration, such as mould or a change in odour, colour or texture.
Store your cosmetics in a dry area away from light and heat. Avoid keeping them in the bathroom, as moisture in this room can promote bacterial growth.
If you have questions about how to use cosmetics safely, don't hesitate to consult your Guardian or I.D.A. beauty advisor.