Depending on hair type and the length, the amount one person uses can differ from others. But the main thing is that you make sure you cover your hair completely with the product. Less is more, as your hair will only absorb what it needs; the rest will simply rinse out. Using a wide tooth comb will help to spread the product evenly, and keep you from using more than necessary. Just be sure to start combing from the ends, and then move upward, to avoid tangling the hair.