Ferulic acid is not the same as vitamin C; they are distinct chemical compounds with different structures and properties, even though both are widely used as antioxidants. Ferulic acid is a phenolic phytochemical found in plant cell walls, such as in rice bran, oats, and coffee, and it is well-known for its excellent stability, free radical scavenging ability, and photoprotective effects. It is commonly added to skincare formulations to stabilize vitamin C and vitamin E, enhance anti-aging and brightening effects, and also has applications in food preservation and pharmaceutical preparations due to its antioxidant and anti-inflammatory properties.