Carbon Dioxide

Carbon Dioxide (CO2) is a colorless, odorless gas used in cosmetics primarily for creating effervescent products and as a propellant in aerosol formulations. Beverage-grade CO2 at 99.9% purity is preferred in cosmetic applications for its exceptional purity and ability to dissolve in aqueous systems, where it forms carbonic acid and lowers pH while creating the characteristic tingling sensation and bubble formation. Formulators choose CO2 for its GRAS status, natural origin from fermentation or industrial capture, antimicrobial properties at high concentrations, and ability to enhance product sensory experience without leaving residues.