Do you know that all cosmetics and skin care products have an expiration date? This means most likely that we, especially ladies, have been keeping the products longer than they should be. Of course, using expired cosmetics and skin care products don’t seem nearly as bad as drinking a glass of spoiled milk, the ingredients still get absorbed by your skin. Natural products have an even shorter shelf life than mainstream, drugstore products, which are full of preservatives.
Below is a quick list obtained from LifeHacker with the usual expiration dates for products that contain preservatives. Organic Authority has a similar list for all-natural products.