Is HHC Legal in South Carolina?

Last reviewed: May 22, 2026

Restricted. The South Carolina Hemp Farming Act, S.C. Code §46-55-10, does not separately list HHC, and the federal Farm Bill arguably covers hemp-derived analogs that meet the delta-9 testing standard. Attorney General Alan Wilson's October 4, 2021 advisory opinion reads the Hemp Farming Act as covering only delta-9 at the regulated threshold and treats other tetrahydrocannabinols as Schedule I substances under S.C. Code §44-53-190.

HHC presents an additional wrinkle: it is hexahydrocannabinol, a hydrogenated analog rather than a strict isomer. Most South Carolina law enforcement treats HHC the same as delta-8 and delta-10 under the AG opinion. The federal H.R. 5371 §781 redefinition takes effect November 12, 2026 and excludes synthetic and chemically converted cannabinoids, which captures HHC unambiguously.

South Carolina Cannabis and Hemp Overview

South Carolina has not legalized medical or adult-use cannabis. Julian's Law (2014) created a narrow CBD pathway for intractable epilepsy patients. The Compassionate Care Act has passed the Senate multiple times but stalls in the House each session.

The state hemp program is administered by the South Carolina Department of Agriculture (SCDA). HHC is hexahydrocannabinol, produced almost exclusively through hydrogenation of hemp-derived CBD or delta-9 THC. That production method is what AG Wilson's 2021 opinion targets and what H.R. 5371 §781 excludes from the federal hemp definition. For the parallel framework on synthetic isomers, see our South Carolina delta-8 page.

What South Carolina Law Actually Says About HHC

S.C. Code §46-55-20 defines hemp using the federal Farm Bill formula. HHC is not listed in the South Carolina Controlled Substances Act and is not separately addressed in the Hemp Farming Act.

The 2021 AG opinion expressly covers "THC and THC isomers including delta-8 THC." HHC is technically a hydrogenated analog rather than an isomer of THC, which has produced some industry argument that the opinion does not strictly cover it. SLED's enforcement posture has not honored that distinction; HHC has been swept up alongside delta-8 in seizures and charges.

How Enforcement Has Played Out

SLED has used the 2021 AG opinion to support seizures, arrests, and prosecutions targeting synthetic-conversion cannabinoid retailers, including HHC. The most prominent action is Operation Ganjapreneur, announced December 9, 2025, which produced 12 state grand jury indictments and the seizure of roughly 15 tons of hemp-derived THC products. Industry counsel has filed legal challenges arguing the products were Farm Bill compliant.

Three competing bills are in the 2025-2026 session. H 3924 creates a hemp-derived consumables licensing framework and expressly prohibits synthetic cannabinoid products, which covers HHC. H 4759 covers intoxicating hemp beverages. H 3935 is a parallel consumables framework. None has passed both chambers as of May 22, 2026.

What This Means for Retailers Selling HHC in South Carolina

• Treat HHC as high-risk inventory in South Carolina. The AG opinion combined with active SLED enforcement creates substantial seizure and prosecution risk even where the statute arguably permits the product.
• Maintain certificates of analysis documenting cannabinoid origin, conversion process, and finished-product content.
• Verify ID at point of sale. Pending bills set 21+ minimums and industry norms have shifted that way.
• Plan for federal H.R. 5371 §781 taking effect November 12, 2026. HHC sits inside the excluded synthetic-cannabinoid category and loses federal Farm Bill cover on that date regardless of state law.
• Pull packaging that resembles marijuana branding or candy mimicry. This has been a consistent SLED enforcement priority.
• Track the 2021 AG opinion, successor opinions, and any judicial ruling that addresses the synthetic-analog question. The current legal status could shift on any of those.

What This Means for Consumers Buying HHC in South Carolina

HHC is available at some South Carolina hemp retailers despite the AG opinion, but enforcement risk is elevated. Consumers should verify products carry a current COA from an accredited lab and that finished-product testing confirms the cannabinoid profile on the label. HHC produces effects similar to delta-9 THC, and metabolites overlap with delta-9 on most standard drug tests. Specialty panels can distinguish HHC metabolites but are uncommon. The November 12, 2026 federal change will narrow what is available at hemp retail nationwide.

Pending Federal Change

H.R. 5371 §781, signed November 12, 2025, explicitly excludes synthetic and chemically converted cannabinoids from the federal hemp definition. HHC is produced through hydrogenation of hemp-derived CBD or delta-9, which places it inside the excluded category. The provision takes effect November 12, 2026. After that date, HHC products lose federal Farm Bill protection regardless of how the South Carolina statute is read. For background see our potential revisions to the 2018 Farm Bill explainer.

Frequently Asked Questions

Is HHC legal in South Carolina in 2026?
Statute arguably permits it; AG Wilson's October 4, 2021 advisory opinion reads synthetic THC analogs as illegal; SLED enforces the AG position. Treat the product as high-risk in South Carolina.

What is HHC?
HHC is hexahydrocannabinol, a hydrogenated analog of THC produced through chemical conversion from hemp-derived CBD or delta-9. The molecule is fully saturated, which affects shelf stability and pharmacological profile.

Does the 2021 AG opinion mention HHC by name?
No. The opinion is titled to cover "THC and THC isomers including delta-8 THC." Industry counsel argue HHC is an analog rather than an isomer and thus outside the opinion's literal scope. SLED enforcement has not honored that distinction.

Does HHC show up on a drug test?
HHC metabolites overlap with delta-9 THC metabolites on most standard tests and can trigger a positive. Specialty panels may distinguish them.

Can I order HHC online to South Carolina?
Online sellers ship today, but SLED has seized synthetic-cannabinoid inventory from in-state retailers. Federal November 12, 2026 change applies.

How does HHC compare to delta-8 in South Carolina?
See our South Carolina delta-8 page. The AG opinion and enforcement posture apply to both, with the small additional industry argument noted above for HHC.

What changes November 12, 2026?
The federal hemp redefinition excludes synthetic and chemically converted cannabinoids. HHC loses federal Farm Bill protection on that date.

This page is provided for informational purposes by ComplyAssistAI LLC and is not legal advice. Hemp and cannabis law in South Carolina changes frequently. For business compliance questions, consult a South Carolina-licensed cannabis attorney. Find one in our Cannabis Lawyer Directory.