How is the great aksha (bibhitaki) oil used, and what does the text say it does?

Detailed answer

The oil is one adhaka of bibhitaki oil cooked with a paste of many flowers, herbs and minerals, one tola each, made with decoctions of asana, khadira heartwood and triphala and kept ten days in an iron pot. The text says the nasya removes nose diseases (in the commentary), makes the face like a lotus and even the old youthful, and that the oil should be given to loved ones; these are the text's traditional statements.