The legal status of delta-8 in the United States is complicated. The 2018 U.S. Farm Bill, which made hemp legal to buy, sell, and grow, defined hemp as a plant containing less than 0.3% of delta-9 THC by dry weight. The farm bill specifically mentions delta-9, not delta-8 or delta-10. Thus, hemp-derived delta-8 and delta-10 products could fall into a legal gray zone. But many states specifically restrict synthetic cannabinoids. If a delta-8 product is synthetically made — which they usually are — it might still be illegal.