If you put the amount of toothpaste on your toothbrush as is shown on the images in toothpaste commercials, you will run out of toothpaste quite quickly. Which means that you will have to buy more toothpaste.

By doing so, you help the manufacturers of toothpaste into some additional money. Undoubtedly, a part of that money will then be used to make more toothpaste commercials.

Is that really what you want? If not: use less or go for a cheap brand that doesn’t run commercials.