In skin serums, ferulic acid tends to work well with other antioxidant ingredients, especially vitamin C. Vitamin C is a common ingredient in many anti-aging skin care products. But vitamin C isn’t very shelf-stable on its own. It
degrades quickly, especially when exposed to sunlight. That’s why vitamin C serums usually come in opaque or amber-colored
bottles. Ferulic acid is thought to help stabilize vitamin C while also increasing its photoprotection. Photoprotection refers to
something’s ability to minimize sun damage.
A 2005 study suggests that ferulic acid has the potential to offer twice the amount of photoprotection when combined with vitamins
C and E.
