So they don't exist. Some overseas brands will insist that it's eco-cert DHA, but as the FDA won't classify DHA as an organic ingredient in the states, that point is moot. Other brands have outdated marketing or are misleading those who purchase their solutions, which is why you may see spray tanners make the organic claim.
We carry a variety of solutions that contain natural and organic ingredients. One of our lines has very high quality ingredients added to it, such as red wine extract, reseveratrol, muscadine grape seed extract and hyraluonic acid to give as much moisture to the skin as possible. I've tried many, many brands throughout the years. In my research, I have even found brands that have even had that funky spray tan smell that developed to be a result of having formaldehyde in their ingredient list. Yet their marketing materials promote it as organic DHA! Don't believe the hype.