A little bit goes a long way. Start small at the midshaft, avoiding the root, working it through to the ends for a styled finish. Use 1-2 pumps daily, applied from back to front when the head is flipped upside down.
Play with it and see how your hair responds. As your hair becomes acclimated to the oil, you may want to use more, so use as needed. Using small amounts of oil over time will yield compounding benefits. If you find your hair feeling greasy and oily, you’re probably using too much so scale back until you find the right amount.