If we remove the cream from milk, is it now two different ingredients: low-fat milk and cream? What if they are combined again, is it milk? Take that example a

If we remove the cream from milk, is it now two different ingredients: low-fat milk and cream? What if they are combined again, is it milk? Take that example and apply it to every single ingredient used in food and cosmetics and supplements. Write that regulation please. Or we can stick to the one that only deals with like, 5 - 10 things.