Detailed answer

For whitehead-prone skin, it is best to use a serum that contains salicylic acid. Salicylic acid is a beta hydroxy acid that helps exfoliate the skin and unclog pores, which can help prevent the formation of whiteheads. It has anti-inflammatory properties that reduce redness and inflammation associated with whiteheads. Look for a serum with a concentration of 0.5%-2% salicylic acid. Apply the serum after cleansing and toning, and before moisturizing. Start with using it once or twice a week and gradually increase frequency as tolerated by your skin. Remember to use sunscreen during the day as salicylic acid can increase sun sensitivity.