Soap Making Supplies

Some ingredients are available at your local supermarket -
Caustic Soda (In large quantities try a chemical supplier)
Cold Pressed Oils - Olive, Grapeseed etc.and Distilled Water.
Palm and Coconut Oils are a little harder to find -  
Try your local health food shop or food distributor.
Quality Essential Oils are available at any health food store and selected pharmacies.