How Long Does Mascara Last? When to Throw It Away

Updated October 30, 2026

The standard advice is to replace mascara about every three months after you open it. The tube is a warm, moist place where bacteria can grow each time you re-dip the wand, so old mascara is a common cause of eye irritation.

Signs it is time to replace it

It is three months or more since you opened it.
It smells different or sour.
It has become dry, clumpy or flaky.
Your eyes feel sore or itchy after using it.

How to make mascara last

Do not pump the wand. It pushes air in and dries the formula out.
Close the tube tightly.
Never add water or saliva.
Do not share mascara.
Store it at room temperature, away from heat.

After an eye infection

If you have had an eye infection, throw away any mascara you used. Speak to a pharmacist or optician if you have symptoms.

Check the symbol

Look for the open-jar symbol on the packaging, which shows the recommended months after opening (for example 3M or 6M).

Related guides: drugstore mascara, sensitive eyes.

FAQ

Can I use mascara for six months?

Most brands and eye specialists advise three months. Check the open-jar symbol on the packaging.

Can old mascara cause an eye infection?

It can carry bacteria. If your eyes are sore or red, stop using it and speak to a pharmacist or optician.