Sodium Hydroxide, also called lye or caustic soda, is a staple ingredient in the soap making process. At Creations from Eden we have decided to carry smaller quantities of this item to help out our hobbyist soapmakers. CANADA POST CANNOT SHIP THIS ITEM! PLEASE SEE BELOW! Shipping is offered on this item, but only via Greyhound or UPS. It will be shipped in 1KG containers and thus an upcharge of 50 cents per KG will be charged on top of the 5KG and 10KG rate. Please choose the "shipped" options in the drop down menu. For 25kg bags, please see our bulk section. Please read about handling lye here. MSDS information is available on request. Please indicate you want a copy when ordering. Note: When working with lye please keep a large jug of vinegar next to you at all times. If any of the lye gets spilled or on the skin, vinegar will neutralize it and stop the burning. Always use gloves and goggles and do not breathe in the fumes.