No, the business code is the code identifying the type of
business for the IRS.
They are all listed at the end of the IRS Instructions for Schedule
C (1040).
On the page in TurboTax Self-Employed when it asks you for the business
code, there is a button that says "Lookup Business Codes". Here you
can enter search terms like "selling cosmetics".
Sure enough, when you hit search, the second result is 454390, which
covers, among other things, "house-to-house direct selling, in-house
selling, direct selling", which pretty much has you covered.
