Pierre Guillaume 19.1 Neroli ad Astra Shower Gel is a cleansing body soap. Turn your shower into a moment of bliss with the sexy, enveloping scent of your favourite fragrance. 19.1 Neroli Ad Astra Shower Gel is a highly perfumed formula based on a cocktail of cleansing agents of natural or renewable origin, including sodium cocoyl glutamate: this very mild surfactant is derived from coconut oil fatty acids and glutamate, one of the most abundant amino acids in the structural protein (collagen) of human skin, so you can wash your face, hair and body, or simply your hands, very gently.