“…The treatment modalities of the pigmentary disorders (melasma, freckles, postinflammatory hyperpigmentation, or acquired bilateral nevus of Ota‐like macules, etc.) have included the routine use of broad spectrum sunscreens, various concentrations of hydroquinone, retinoic acid (tretinoin), salicylic acid, glycolic acid, azelaic acid, and surgical treatment such as chemical peels or laser therapy 1–15 …”