On Natural Arousal Oil - Ultra is a botanical arousal oil designed to enhance physical sensation for women. This formula creates a warm, unique buzzing sensation that stimulates nerve endings and increases blood flow, potentially making it easier for women to achieve orgasm. The oil is also helpful in increasing personal lubrication, which can be beneficial for those experiencing hormonal changes or other conditions affecting self-lubrication. Safe for use during oral sex, this product is free from menthol, L-Arginine, glycerin, and parabens. The Ultra version offers 25% more intensity than the original formula. Manufactured by Sensuva in the USA.