Astaxanthin: 6,000x more potent than vitamin C

Most antioxidants (vitamin C, vitamin E, beta-carotene) can become pro-oxidant under certain conditions i.e donating an electron, then becoming a radical themselves. Astaxanthin is the only known carotenoid that quenches singlet oxygen and scavenges radicals without ever generating a pro-oxidant state. It literally cannot do harm through its antioxidant mechanism. This makes it structurally unique, not just "more potent."Publications of interest:https://pmc.ncbi.nlm.nih.gov/articles/PMC7139534/https://pmc.ncbi.nlm.nih.gov/articles/PMC8746862/https://pmc.ncbi.nlm.nih.gov/articles/PMC6878783/