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.
9. Use sunscreen to prevent burned, chapped lips. Already chapped? Skip the SPF so it doesnât irritate the sensitive skin. 10. Another ingredient to look for: Shea butter, which nourishes and moisturizes. Try Eraclea Ever-moist Lip Balm, which gives lips a silky smooth finish and subtle shine. 11. Chapped lips will heal best when theyâre moist, so stick to lip balms and skip lip waxes. 12. On the flip side, if your lips are looking good, use a beeswax when youâre going to be outside for a while (beeswax works as a barrier against dehydration).