Carr & Day & Martin Glycerine Saddle Soap. In a re-sealable tray, the original, traditional bar soap that conditions, protects and adds shine to leather. This pure, clear quality soap is formulated from vegetable oils, including coconut oil and glycerine for regular use. The glycerine fills and seals pores in the leather to form a barrier against salt, dirt, grease and water. Use after ‘Step 1’ Belvoir Tack Cleaner.