Contains 11 organic amino acid and that is formulated with natural & organic ingredients. Inca Glow-Out lasts 4 wks. Prices start at $85 and up. Inca Glow is the first to market hair smoothing system that contains 11 organic amino acid and that is formulated with natural & organic ingredients. It does not contain Formaldehyde, smell or odor, it does not burn or irritate the scalp and it’s 100% safe for all hair types, clients and professionals!