The following is the warning label for a product called Liquid Leaf:

WARNING: CONTAINS XYLENE AND SOLVENT YELLOW 14, A CHEMICAL KNOWN TO THE STATE OF CALIFORNIA TO CAUSE CANCER. AVOID BREATHING VAPORS. KEEP AWAY FROM HEAT, SPARKS AND OPEN FLAME. USE ONLY WITH ADEQUATE VENTILATION. MAY CAUSE CELL DAMAGE. MAY CAUSE RESPIRATORY TRACT IRRITATION. MAY CAUSE NUMBNESS OR WEAKNESS IN THE EXTREMITIES. EXPOSURE MAY CAUSE DAMAGE TO YOUR LIVER OR KIDNEYS. FOR FURTHER HEALTH INFORMATION, CONTACT A POISON CONTROL CENTER. When using, wear impermeable protective gloves. Wear NIOSH certified respirator with appropriate cartridge. Keep away from eyes. Use exhaust fan to assure adequate cross-ventilation. Do not use or mix with strong oxidizing agents, strong acids, strong bases or selected amines. Wash hands immediately after use. Keep container tightly closed. Store in well ventilated area. Do not store or use near heat, sparks or flame. FIRST AID: If eye contact occurs, rinse immediately with water, then flush with tap water for 15 minutes. If skin contact occurs, wash with soap and water for 5 minutes. If swallowed, get prompt medical attention. If symptoms occur, move to fresh air. If symptoms persist, see a physician. KEEP OUT OF REACH OF CHILDREN.

The thing is, real goldleafing isn't that difficult — why anyone would use something this toxic just to save a little work is beyond me.