Are slime kits safe for younger kids?

Most major-brand kits (Elmer's, Original Stationery, FunKidz) advertise non-toxic, washable formulas and many are explicitly borax-free. Reviewers across retailer reviews still recommend adult supervision for kids under 6, both for the small mix-in pieces (beads, charms, foam balls) and because activator solutions can irritate skin with prolonged contact. Wash hands after play.