DNA. complementary DNA (cDNA), copy DNA DNA transcribed from a specific RNA through the action of the enzyme reverse transcriptase. mitochondrial DNA (mtDNA) the DNA of the mitochondrial chromosome, existing in several thousand copies per cell and inherited exclusively from the mother.
Castor Oil. Castor oil is another good treatment for dry and chapped lips. Simply apply castor oil to your lips several times a day. You can also make a soothing treatment using one teaspoon of castor oil, one teaspoon of glycerin and a few drops of fresh lemon juice.
Aloe Vera Gel. The healing qualities of aloe vera are well known. Putting a small amount of aloe vera gel on your lips daily will help them heal and relieve the pain. Aloe vera gel has an unpleasant taste but its amazing healing quality is worth it. Another simple and natural solution for chapped lips is cucumber.