According to the Mayo Clinic, cold sores, often referred to as fever blisters, are common. They're caused by the herpes simplex 1 virus, appear on the lip and can occasionally be seen on the fingers, chin, in the nostrils or the mouth. The sores may emerge several days after a tingling sensation and hard spot on the skin is noticed. These blisters can be painful and unsightly, and while there is no cure for them, you can reduce the pain and their duration with a few at-home remedies.
Avoid Picking
The first and simplest thing you can do to help your cold sore heal is to leave it alone. According to the Mayo Clinic, pinching, poking and squeezing the sore is not a good idea. By picking at the sore you can cause further damage to the skin and extend the healing time as well as spread the infection, as it is contagious.
Ice
Applying ice to the cold sore will help relieve the pain and irritation. Make a cold compress by filling a plastic bag, wash cloth or clean sock with ice cubes. In a pinch, a frozen bag of vegetables can serve as a cold compress. According to the Mayo Clinic, a warm compress may also provide relief.
Moisture
Moisture is an important aspect of healthy skin care, and cold sores are no different. These blisters also need moisture to soften and heal the affected area. Applying a moisturizing balm such as petroleum jelly (Vaseline) will keep the blister from cracking and bleeding, which can cause further pain and discomfort.
Witch Hazel
Witch hazel is a widely used antiseptic that has been around for many years and is available at drug stores and supermarkets. This inexpensive skin tonic can be used to cleanse and tone the skin and may help a cold sore, though no scientific evidence is available to support this remedy.


