Many people say in general that on so and so day one(it applies to men/women/both) should not apply oil.
Say for example they may avoid oiling hair on full moon day(i.e., poornima) or no moon day(i.e., amavasya), Sunday, Tuesday etc.,
In case of a both women and men are there any detailed mentioning of the same? I want to know about the same with some scriptural evidence.