Cover the ice pack with a towel so that it doesn't get too cold. Then, place the ice pack over the area with the sores. Leave it in place for about 10-15 minutes. Then, wait an hour before repeating the treatment. You may also soak a clean washcloth with cold water and apply the cool, wet compress to the lesions. Ice provides immense relief to most types of pain, as it numbs the skin and dulls the pain receptors in the area. If cold doesn't help relieve the pain, some people get more relief with hot/warm compresses. Use a clean cotton towel or washcloth folded so that it covers the entire area with the sores. Use water that is at a warm-hot temperature. Soak the towel, wring out excess water, and apply to the painful area. Use a clean towel or washcloth each time you repeat the process and wash each item in hot soapy water to prevent the possible spread of the infection. Propolis is a waxy resin made by bees that has antiviral properties and appears to accelerate the healing of sores. You can use ointments or salves that contain propolis to soothe and help heal the sores.  Many health food stores and drugstores carry these products. Make sure you buy an ointment or salve (not a capsule or tincture) and follow the manufacturer’s instructions. For propolis and any other topical home remedy, try a small amount on an unaffected area of skin and wait 24 hours (to ensure you don't have any allergic reactions) before applying it to the site of your outbreak. Aloe gel or an aloe ointment can be used for pain relief, and it works even better if it’s cool. Place the aloe plat stem or gel in your refrigerator for a few hours before using it. Apply the chilled aloe directly onto the sore. You can do this by breaking off a bit of an aloe plant and squeezing out the juice, or by using a commercial product and following the manufacturer’s instructions. You can let the aloe gel or ointment dry and later wash off the crust. Reapply every 4 hours as needed. Three 1,000 mg doses of lysine per day may shorten the length of an...

TL;DR in Vietnamese:
Dùng đá lạnh chườm lên chỗ đau. Đắp gạc ấm. Bôi keo ong lên chỗ đau. Bôi lô hội để giảm đau. Thử uống thực phẩm bổ sung lysine. Bôi dầu ô liu. Bôi mật ong manuka honey lên chỗ đau. Bôi dầu lá kinh giới (oregano) lên chỗ đau. Bôi tinh dầu trà. Bôi dầu dừa.