Definition: Botulinin is a protein that was discovered in 1976 by Dr. Peter Schatzman of the University of California, Los Angeles, and it has since become one of the most widely used neuromodulators for facial wrinkles. This substance works by blocking the release of certain neurotransmitters from nerve cells called acetylcholine receptors, which are involved in muscle tone and coordination. Botulinin is a non-surgical treatment option that can help reduce the appearance of fine lines