What is the most logical next event?

How to treat oily hair
Wash regularly.
You should wash your hair at least once a day if your hair is oily. You may need to wash more often if it stays oily.

Select from the following.
(I) If you have a lot of oily hair, you can use a shampoo and conditioner made specifically for oily hair. Many body washes contain ingredients that can irritate oily hair.;
(II) Holding in oil may be difficult or even impossible, even with naturally oily hair. Don't wash too often as this can affect hair follicles, especially if used.;
(III) Washing more often will help cut down on the oil. Some people claim this step is the opposite of what you should do.;
(IV) Washing too frequently can strip your hair of oils. Washing too often can work as well, because your hair will still produce oil.;
(III)