What kind of business license do I need?

I'm starting my own cosmetic line, and I'm wondering what kind of business license I'm going to need to have my products sold in boutiques and retail stores. I currently live in California but plan on selling my products in various stores throughout the United States and Canada (and perhaps even abroad). I have looked into purchasing an LLC, but I'm wondering if there is a type of license that is more affordable for someone at the beginning stage of her business. If an LLC is my best bet, could you please recommend a specific company (a reliable one) where I could buy my license from and what kind of package I should purchase?

You are mixing up a couple of concepts here. The first is the need to form a business entity (corporation or LLC) for doing business. That just gives you general permission to do business.

The second is that there may be specific state or federal regulations/licenses that govern how you can operate your cosmetics business. You may need to do both. The fees are what they are -- they aren't scaled depending on (for example) how much business you're doing or how long you've been in business. Speak to a business attorney in your area so that you don't have to navigate this on your own.