We're selling beard oil and have not really had any problems as of yet. However, I don't think the way we did things are 100% kosher (I don't really have a tax id in the states which I think i'm probably supposed to have). We've been getting away with i because shipments of 100$-1000$ value are not really worth the hassle for the IRS. Probably bit off more than I can chew but my thinking is that if we're successful enough to be spotted, we'll have the monies to pay some professional to get us out of trouble. Pretty reckless approach, but at the same time paying 1000$ for some registrations and all the mental headache was really not worth it when we started because it was all a big experiment that we only made about 1000$ profit on in 2015. If it gets more serious, i'm ready to deal with the headache.