Step 11:

Picture of
After the glue holding the Epsom salts crystals is dry, take the clean, dry paint brush, and brush off any loose salt crystals.  Then use the clear spray sealer to seal the Epsom salts crystals.  Spray 4 light coats, with time to dry, in between each coat.  A heavy coat could cause the Epsom salts crystals to dissolve, so light coats work best.  Let dry.