Putting Vicks VapoRub on the feet before bed is a popular home remedy that has been shared for generations. Some people swear by it, particularly when they’re dealing with a stuffy nose, cough, or dry feet.

But what can this simple nighttime routine actually do?

Vicks VapoRub contains ingredients such as camphor, menthol, and eucalyptus oil. When used as directed, these ingredients can provide a cooling sensation and help relieve certain cold symptoms.

Here are four reasons people use it on their feet—and what you should know.

1. It Can Moisturize Dry Feet

One of the more straightforward benefits is for dry, rough skin.

VapoRub contains petrolatum, which acts as an occlusive moisturizer. Applying a small amount to dry heels and covering them with cotton socks overnight can help reduce moisture loss and leave the skin feeling softer.

For simple dry skin, however, an ordinary fragrance-free moisturizer or petroleum jelly may be a more appropriate option.

2. The Menthol Can Create a Cooling Sensation

Menthol activates cold-sensitive receptors in the skin, producing a noticeable cooling sensation.

Applying VapoRub to the feet may therefore make them feel refreshed or cool. This is a sensory effect rather than evidence that the product is treating an underlying medical condition.

3. It May Become Part of a Relaxing Bedtime Routine

The strong menthol and eucalyptus aroma can feel soothing to some people.

A warm bath, clean socks, gentle foot massage, and a familiar bedtime routine can all contribute to relaxation. If you enjoy the scent of VapoRub, using a small amount as part of that routine may be pleasant.

However, this should not be confused with proven treatment for insomnia or other sleep disorders.

4. Some People Use It During a Cold

Perhaps the most famous claim is that putting Vicks on the feet can stop a cough.

There is not good evidence that applying VapoRub to the feet treats a cough or cold. The product is labeled for use on the chest and throat to temporarily relieve cough associated with the common cold, and its directions should be followed.

In other words, if you’re using it on your feet because you enjoy the routine or want to moisturize dry skin, that’s different from expecting it to cure a respiratory infection.

How to Use It Safely

If you’re using VapoRub on your feet, apply a small amount to intact skin and wash your hands afterward.

Avoid putting it on cuts, irritated skin, or open wounds. Don’t apply it inside the nose or mouth, and don’t swallow it.

VapoRub contains camphor, which can be harmful if swallowed. Keep it away from children and pets.

If you have sensitive skin, test a small area first and stop using it if you develop burning, redness, itching, or a rash.

What About Babies and Young Children?

Extra caution is important with young children. VapoRub products have age restrictions and specific directions, so check the product label before using them.

Never use an adult product in a way that contradicts its labeling or a healthcare professional’s advice.

The Bottom Line

Putting Vicks VapoRub on your feet before bed is a popular home remedy, but some of the claims surrounding it are stronger than the evidence.

It may help soften dry feet and provide a cooling or aromatic sensation, but there isn’t strong evidence that applying it to the feet can cure a cold, stop a cough, or remove illness from the body.

If you enjoy the ritual, use the product safely and according to its directions—and keep expectations realistic.