Does any one know why. } I tested The Ordinary Alpha Arbutin 2% + HA for five weeks, and I documented every day, and now I am ready to share my results. Please try again or use a different postcode or place name. All rights reserved. The Ordinary Azelaic Acid Suspension 10% targets skin congestion, visible signs of aging, dullness, and uneven skin tone. If you have any concerns about your health, consult a qualified healthcare professional. Alpha arbutin is a compound that comes from a plant called the bearberry shrub. //