Ashtangasamgraha 22.36

22.36

śvitraṃ jayeccikkaṇatāṃ gatena tena praliptaṃ bahuśaḥ praghṛṣṭam |

kuṣṭhaṃ maśaṃ vā tilakālakaṃ vā yadvā vraṇe syādadhimāṃsajātam ||

rūkṣatiktakaṭuścāhāraḥ |

śophepyevameva vidhiḥ |

kaṭutīkṣṇoṣṇāśca pradehapariṣekāḥ ||

one conquers vitiligo by this [alkali], when it has attained glossiness, smeared on repeatedly after being rubbed; / or skin disease, moles, freckles, or whatever fleshy outgrowth there might be in a wound.
And the diet should be dry, bitter, and pungent;
the procedure is the same also in swelling;
and hot poultices and sprinklings should be pungent and sharp.