Salt on Cold Sore Overnight: Does It Really Work?

Cold sores can be painful, annoying, and inconvenient. Many people look for quick remedies to get rid of them as fast as possible. One popular method is using salt on a cold sore overnight, but does it really work? Let’s explore the effectiveness of this method and other fast home remedies that might help.

Does Salt Kill Cold Sores Instantly?

Salt is known for its antiseptic and drying properties, which can help reduce the severity of a cold sore. While salt on a cold sore overnight may help dry it out, it does not kill the virus instantly. However, applying salt directly can shorten the healing time by reducing moisture and preventing the sore from worsening.

How Long to Leave Salt on a Cold Sore?

If you decide to use salt, it’s best to apply a small amount to the affected area for about 10–15 minutes before rinsing it off. Some people on Reddit suggest leaving salt on a cold sore overnight, but this can cause irritation and increase discomfort. A better option is to apply salt for short intervals throughout the day.

Cold Sore Ice Trick: Does It Work?

Another common remedy is the cold sore ice trick, which involves applying ice to the sore to reduce inflammation and slow the virus’s spread. Ice doesn’t kill the virus, but it can provide relief by numbing the area and reducing swelling. Apply ice wrapped in a clean cloth for 5–10 minutes several times a day.

Toothpaste on Cold Sore Overnight: Effective or Not?

Some people swear by toothpaste on a cold sore overnight, believing that the drying agents in toothpaste help shrink the sore. While toothpaste can dry out a cold sore, it can also cause irritation due to ingredients like menthol and sodium lauryl sulfate. If you try this method, use a small amount and wash it off if irritation occurs.

How to Get Rid of a Cold Sore in 24 Hours

While completely healing a cold sore in 24 hours is difficult, some steps can speed up the process:

• Apply antiviral creams like acyclovir or docosanol at the first sign of a cold sore.
• Use salt, ice, or toothpaste cautiously to dry the sore faster.
• Keep lips moisturized to prevent cracking and further irritation.
• Take lysine supplements to help reduce outbreaks.

How to Dry Out a Cold Sore Overnight

To speed up healing overnight, try the following methods:

• Apply salt for a short time and rinse it off.
• Use an over-the-counter antiviral cream before bed.
• Dab rubbing alcohol or hydrogen peroxide to help dry out the sore.
• Keep the area clean and avoid touching it to prevent spreading.

How to Get Rid of Cold Sores Fast at Home

In addition to salt, toothpaste, and ice, other effective home remedies include:

• Apple cider vinegar – Helps disinfect and dry out the sore.
• Tea tree oil – Has antiviral properties that can speed up healing.
• Aloe vera gel – Soothes irritation and helps repair skin.
• Honey – Contains antiviral properties that may reduce healing time.

Final Thoughts

While salt on a cold sore overnight can help dry out the blister, it’s not an instant cure. The best way to get rid of a cold sore fast is by using antiviral treatments, home remedies, and proper care. If cold sores are frequent or severe, consult a doctor for stronger treatments.