What exactly is Melaleuca?

[Jake]

That's a plant who's abstract is used for various purposes.

Here's the BBBs description of the A+ rated Melaleuca inc.

Melaleuca, Inc. is listed as a Direct Marketing Company. The company contracts with independent marketing executives to sell its various lines of nutritional, pharmaceutical, personal care, household cleaning, and pet care products. They also offer travel, phone and credit card services. Independent Marketing Executives are required to order a minimum monthly product supply, but are not required to maintain an inventory of products.

It sounds a lot like a typical MLM, maybe it lacks the multi tier structure.