Paula's Choice 10% Azelaic Acid Booster, 1 fl oz tube. Brand new. Apply once or twice daily to clarify and even skin tone. Non-irritating, fragrance free. Item number 04240-400-400. There is a 5 pound limit for all bundled purchases. If you have questions about weight, please asked before paying. Tags: skincare, clarifying, skin toning, fragrance free, non-irritating. Paula's Choice 20% Acelaic Acid Booster.