Consider replacing foundation or cream-based blush every six months or a year. Powder products, if properly stored and do not contain moisture, are valid for up to two years.
Lipstickis good for one or two years, and lip gloss can be used for six months to 1 year. Lipstick will expire over time, even if it isn't opened.
Unopened lipstick is valid for two to five years, depending on the brand and ingredients.