Because of the extensive processing these formulas require, hydrolyzed-protein formulas are significantly more expensive than the other types. Once you decide on a formula, you need to choose the type of packaging that will work best for you. Each has its pros and cons, but the end product is the same. The formula comes in a resealable tin with a measuring scoop inside. The proper amount of powder is mixed with tap or bottled water before serving.
Powdered formula is the most cost effective and is good for mixing one bottle at a time.
It's easy to prepare, but doesn't blend as quickly as liquid. The formula is mixed with tap or bottled water before serving. It comes in small cans and works well when making several bottles at once. Concentrated liquid formula is more economical than ready to feed, but a bit more expensive than powder. You just pour the formula from the can into a bottle and serve.