The answer to the question "How many ingredients do you use in a formulation before you are satisfied with its performance?" can vary greatly. It depends on the company you come from, how you position your product, and any cost constraints placed on your formulation. You can put many ingredients in your formulation to make the label look extravagant. Some consumers think that the more ingredients in a formulation, some being fairly exotic with names that are almost unpronounceable, the better the product and the more it will do for them. And some consumers even understand that this is what makes the cost of some products so high. But we are talking about product performance and how many ingredients it takes to get there.