Key Safety Information for Cured Epoxy Resin Rings: Skin Contact: Fully cured, solid epoxy is generally safe. However, individuals with extreme sensitivities may experience skin reactions to residues, and dust from sanding can cause irritation. Sanding/Grinding (Crucial): While the ring is safe to wear, sanding or cutting cured resin is hazardous. It produces fine dust that can cause severe respiratory irritation, sensitization, and asthma. A dust mask or respirator must be worn during finishing. Food Safety: Once fully cured, many epoxy resins are considered food-safe (non-toxic), but this depends on the specific formulation. Allergic Reactions: While rare with fully cured epoxy, allergic dermatitis (redness, swelling, itching) can occur from prolonged contact with incomplete curing.