Epithalon - a synthetic tetrapeptide, a derivative of epithalamine – bovine pineal gland extract, is considered a potential activator of the enzyme telomerase, which protects and maintains telomere caps at the end of DNA chromosomes. Research is primarily devoted to its ability to fight against the effects of aging, as well as life extension, especially through the process of lengthening telomeres - the end parts of eukaryotic chromosomes. Except of anti-aging effects of this short regulatory peptide, there are also possible anti-tumor, DNA activating or skin cell regenerative properties.