Does nail polish expire?

Here’s when common household items should be replaced, according to experts.

What’s the shelf life of your mascara?

And hold up, doesnail polishexpire?

Here, experts share when to toss 17 common household products.

Sealed, it’s good for three years.

And JSYK, expiredhydrogen peroxideis ineffective but not harmful.

“This puts more stress on your joints, making you more prone to injuries,” she adds.

If you don’t run but work out regularly, buy new sneakers every six months.

(Looking for some new sneaks?

Here are 10podiatrist-approved cushioned running shoes.)

A supportive bra protects your breast tissue from stretching and can also help prevent soreness.

In Your Bathroom

Nail Polish

When to toss:How long does nail polish last?

Well, that depends.

Opened bottles should be tossed after about two years.

Unopened, they can last indefinitely, says Annette Soboleski, a nail technician for polish makerOPI.

Once a bottle has been opened, some ingredients will evaporate, causing the polish to thicken and separate.

To thin the polish and make it last longer, add a few drops of nail lacquer thinner.

Hair Dye

When to toss:After 24 months.

Disposable Razor

When to toss:Every three shaves.

After that, the blade becomes nicked and can cut your skin.

Change the blade weekly on non-disposable razors.

Loofah

When to toss:After three or four weeks.

Plus, a loofah loses its ability to slough offdry skinafter a few weeks.

Mesh puffs are more resistant to bacteria and can last for eight weeks.

Moisturizer

When to toss:Opened, after one year.

Unopened, after two.

Over time, bacteria can grow and cause a rash or infection, explains Dr. Jaliman.

(These arethe best sunscreens, according toShapeeditors.)

Mascara

When to toss:Every three months.

(Speaking of eye health, learn eye drops and if they’re actually safe.)

Your safest bet, however, is to clean up any kitchen spills with paper towels.

Both develop bacteria over time that may cause gastrointestinal upset or food poisoning.

(Try thesethree-ingredient salad dressingswhen you need a quick fix.)