Нашла в имэйле от них:Note, that all HQ containing products listed below will also require your email. Alternatively you can place an order for an Fx version (containing Arbutin) and then write to us asking for the Rx version.The prices are identical for these two versions.Rx (HQ) versionsObagi Nu-Derm® BlenderObagi Nu-Derm® ClearObag C®Rx-Clarifying SerumObagi C®Rx-Therapy Night CreamFx (Arbutin) versionsObagi Nu-Derm® Blend FxObagi Nu-Derm® Clear FxObagi C®Rx-Clarifying Serum FxObagi C®Rx-Therapy Night Cream FxВечером я посмотрю, чем я пользуюсь. Вид немного другой, не как гидрохинон, мне кажется