Shellac Resin
Used for blocking felt, wool, and fur hats. 

Refined Water Shellac
This is a pre-dissolved aqueous shellac solution ready to use for dipping felt hats.

Hydrolac B-5 Powder
A specially processed powder based on refined (dewaxed) bleached shellac and pre-alkalized with sodium borate (Borax) for hats. 

Felt Hat Stiffener
An alcohol-based hat stiffener which is commonly used as an aftermarket treatment on felt hats.  This stiffener can be diluted with alcohol and is typically spray applied onto the surface of the hat.