Anandakanda 1.16.82

1.16.82

tattailayantrato grāhyaṃ tena syātkeśarañjanam /
karṣaṃ japārasaḥ kṣaudraṃ saptāhaṃ nasyamācaret //

its oil should be extracted through an apparatus; by that, hair dyeing occurs.
A karṣa of hibiscus juice with honey: one should perform nasal therapy for seven days.