There are bioaccumulative toxins, but nothing over the counter sold in a plastic tub by some guy in a tank top will get rid of them. And some, like lead, have symptoms that are not reversible. Lead poisoning is a lifelong condition. So a magical “detoxifying” shoe insole or smoothie additive isn’t going to do much. I think @nightshade@piefed.social 's point remains that any toxins that stay in the body are either gone for good after a short time, or there to stay.