Japan Drier is used primarily for oil guilding. It is an alkali based drier that may cause yellowing or darkening of colors over time so it is recommended for sign painting, woodworking and crafting versus fine art applications. Apply Japan Drier to an appropriate surface and allow to dry to a high tack before applying gold or silver leaf; smooth then burnish. Made in the USA. WARNING: DANGER! COMBUSTIBLE. MAYBE HARMFUL IF SWALLOWED. VAPOR HARMFUL. SHIPPING RESTRICTIONS APPLY TO HAZARDOUS MATERIALS. KEEP OUT OF REACH OF CHILDREN! Before using, carefully read CAUTIONS on back panel.