L'Oréal Inoacolor Care Masque is a rinse-out hair mask formulated to help maintain color vibrancy on hair treated with L'Oréal Professionnel's INOA color line, in the hair-mask category.
The creamy formula is built around argan oil, which coats the hair fiber for a smoother, shinier feel, and green tea extract, an antioxidant intended to help guard against color fade. The rest of the base is a fairly typical conditioning system of fatty alcohols, quaternary conditioning agents, and a silicone (amodimethicone) for slip and detangling, along with smaller amounts of shea butter, olive oil, sunflower oil, and panthenol.
It's meant to be used after shampooing: apply and massage evenly through hair, spread through the lengths and ends, leave on for 2-3 minutes, then rinse thoroughly. Because contact time is short, it works as a quick maintenance step rather than a deep, extended repair treatment.