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.
Peppermint causes a refreshing tingle that slightly makes the lips suppler. Beeswax is known to condition the skin and it helps keep the lips healthy and address problems like lip chapping. Vitamin E is an antioxidant that moisturizes and protects the lips from environmental damage. Lanolin and the other natural ingredients soothe the lips and reduce discomfort from cracked or chapped lips.