Epoxies are safe when handled properly but it is essential to understand the hazards and take precautions to avoid them. The primary hazard associated with epoxy involves skin contact.
WEST SYSTEM Resin may cause moderate skin irritation;
WEST SYSTEM Hardeners may cause severe skin irritation.
Resins and hardeners are also sensitisers and may cause an allergic reaction but, from our experience, most people are not sensitive to WEST SYSTEM Resin and Hardeners. These hazards decrease as resin/hardener mixes reach full cure but it is important to appreciate that the hazards also apply to the sanding dust from partially cured epoxy.