Whether you use adisposable razoror one with a replaceable blade, it can be hard to keep up with the condition of it.

Some use a razor daily for facial hair, while others use it every once in a while to trim body hair, especially on the legs and under the arms.

Over time, you’ll come to notice that it’s time to throw away a razor when the shave you’re getting isn’t as close as you’d like it to be.

Holding razor

A dull razor can be detrimental to your skin, and can even cause morecuts and irritationthan a sharp blade, according toGillette Venus.This is due to thedull bladepulling at your body hair and skin, as it’s not able to glide across the skin’s surface.

But what you really should look out for when you next shave is the condition of the blade itself, especially if you have a tendency to just leave your razor in a moist, wet environment like the shower.

When you spot rust forming on your razor, it’s time to replace it

AsLeaf TVnotes, rust can form pretty quickly when water is left on the blade.

Razor blade

This water oxidizes to form rust, which is commonly used to describe “the corrosion and oxidisation of iron and its alloys”, including steel blades (viaNCH Europe).

And once you see that flaky, reddish orange gunk on your blade, it’s time to throw it away.

“Rust is a sign that a replacement is needed immediately,” Charles Park, Head of Product Innovation at Dorco Razors, toldGood Housekeeping.

“Not only does rust interfere with the performance of the blade, it can cause serious blood infections if the skin is nicked during shaving.”

Tetanus is the most common infection associated with rust, but according toHealthlineit’s not the rust that causes the infection, it’s resulting from Clostridium bacteria that may be on the rusted object.

While you should immediately throw out a razor if you could see rust, there are ways to prevent it from happening in the first place.

This includes rinsing and drying your razor after using it, and not storing it in the bathroom, as humidity is a major factor for rust formation (via Leaf TV).