hydrogen peroxide

/HH AY1 D R AH0 JH AH0 N P ER0 AA1 K S AY0 D/
noun
  1. 1

    A colourless liquid, H2O2, soluble in water, used as a mild antiseptic, bleaching agent (especially for bleaching hair), oxidizing agent and chemical reagent.

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Source: https://en.wiktionary.org/wiki/hydrogen%20peroxide