Astaxanthin is a red-pink pigment structurally similar to beta-carotene but potentially safer due to chemical differences.

“What is astaxanthin? It's a really interesting compound. It's the red-pink pigment found in various seafoods. So shrimp, I'm not a big seafood fan, but like certain fish, like the, you'll see at the fish market will have that red-pink pigment. And it's also in the feathers of flamingos, please don't eat the feathers of flamingos, and please also don't eat flamingos. It's structurally similar to betacarotene, so it's very pro vitamin A, but it has some chemical differences, which may make it safer than vitamin A.”