Carotene extracted from fresh carrots, and dried carrot powder were used to study their effects as natural antioxidant at levels of 0.05, 0.01 and 0.2% (w/w). Carotene and carats powder were added to refined corn oil and the oxidizahility were determined in dark (oven at 63±1oC) and light. The addition of carotene, in all cases, improved the stability of refined corn oil, and the stability was proportionally increased as the carotene concentration increased. Carrot powder, obtained from carrot dried in indirect sunlight, increased the stability of refined corn oil (exposed to light) from 4 days to 11 days also, the oil had better colour compered to the other treatments.