The Ordinary 2% Alpha Arbutin + HA Hyperpigmentation SerumProduct Details Alpha Arbutin 2% + HA is a water based serum specifically designed to even skin tone and minimize the appearance of dark spots. This dark spot correcting serum combines a potent concentration of purified alpha arbutin, a well known skin brightening ingredient, with hyaluronic acid. This high strength formula offers effective results yet is easy to use and well tolerated. It can be used daily in any regimen to support a more even