Depending on how clean your brushes/applicators are and how you store your products, your makeup’s expiration date can vary from these estimates.
In general, it’s time to toss a product after the following amount of time has passed since the first usage:
- Concealer and Foundation: 6-8 months
- Powder-based makeup (blush, bronzer, pressed powder): 1 year
- Eyeliner: 1 year
- Lip gloss and lip stick: 1 year
- Mascara: 3 months
- Eye shadow: 1 year
- Sunscreen: 6 months
Use this as a guide. If you live in a humid area, you could halve these times. Just watch for any signs of mildew, mould in varying colours, & smells. If you notice any of these things, don't second guess, your health isn't worth it. Toss it.