This came first with the bad days.

Only once he apologized in the very beginning: "It's so bad to-day, I'll just wear these around." Eventually these became the permanent thing.
Also, he had been wont to pay fifteen cents for a shave, and a tip of ten cents.

In his first distress, he cut down the tip to five, then to nothing.

Later, he tried a ten-cent barber shop, and, finding that the shave was satisfactory, patronized regularly.

Later still, he put off shaving to every other day, then to every third, and so on, until once a week became the rule.