Putting these beads on your child is indicative of an inability to read, and think critically.
I wonder if they’d sell less well if they were forced to add an info sheet on succinic acid, and another on choking risk in infants to every boxed bead string.
Although I suppose you’d have to ‘believe’ that succinic acid was the only active ‘ingredient’ in real amber. But for those who go with at least that much science, they’d surely be interested in the animal testing trials that found various levels of severity of toxicity (as a broad term).
Succinic acid has a Pregnancy (health) risk rating of ‘C’, causes irritation to eyes, possible increase of thyroid adenomas, linked to weight loss, etc (in animals).
Interestingly, it isn’t considered to be absorbed through the skin. 
I wonder if that would be enough facts to tip the balance of decision-making away from ‘oh but I think they’re so pretty’ or ‘it can’t hurt to give it a go’ ??