Oh Yeahh! Happy Lip Balm Violet Our Oh Yeahh! Lip Balm Is Made With The Exclusive Hbc Formula: Cocoa, Kiwi Extracts And Griffonia Simplicifolia (An African Plant). All These Elements Are Very Rich In Tryptophan, Which Is The Precursor Of Serotonin, The “Hormone Of Good Tone”. Serotonin Lifts Your Spirits Up And It Is Well Known Because Of Its Proprieties: It Regulates Appetite, The Sleep-Wake Cycle And Makes You Feel Good.