Ashtangasamgraha 22.17

22.17

abhiyuktastu satataṃ sarvamālocya sarvathā |

na jātu skhalati prājño viṣamepi kriyāpathe ||

pakṣādūrdhvaṃ śvitraṇā peyametat kāryaṃ cāsmai kuṣṭhadṛṣṭaṃ vidhānam ||

svedayecca |

tathā kṣīrasarpirnasyaṃ śirobhyaṅgaśca |

evamapyanupaśame tu punarvirekaḥ ||

The wise one, however, who is constantly diligent, having examined everything in every way,
never stumbles, even on an uneven path of therapeutic action.
After a fortnight, this should be drunk by the patient with leukoderma, and the procedure prescribed for skin diseases should be performed for him;
and one should foment him;
likewise nasal drops of milk and ghee, and anointing of the head;
if there is still no relief even so, then purgation again.