You'll often see ferulic acid used in conjunction with vitamins C and E. "Vitamin C especially tends to be unstable in formulation, but the ferulic acid helps it maintain stability," Guanche says. "It has antioxidant effects and reduces damage caused to the skin by free radicals."
Azelaic acid is becoming more and more popular as a skin care ingredient lately, which is in part due to its effectiveness in treating "acne, rosacea and unwanted pigmentation," Guanche says. She also notes that the exfoliating acid is great for helping eradicate any mites you may have in your pores (yikes!). Similarly, Lorencin says that "it is especially effective in fighting P. Acnes bacteria," (aka one of the main causes of acne). "It is milder than salicylic acid and can be tolerated by most skin types," she adds.
