If you're equal parts cook and baker, consider keeping both types of brushes in your kitchen.
Use for: Applying egg wash or glaze to delicate doughs and pastry or butter/oil to phyllo dough; brushing crumbs from cake layers
Avoid: High heat, which can burn bristles and melt glue that secures them. Also avoid using with anything that has strong odor—smells cling to bristles, even after washing.
To clean: Rinse briefly to remove debris. Rub warm, soapy water into bristles and rinse thoroughly. Blot with towel and lay flat to dry. Replace brush if it begins to smell.
Use for: High-heat applications; basting meat or poultry; applying oil or melted butter to pans; applying anything with strong odor
Avoid: Delicate items. Brush can damage fragile dough or fruit; its larger bristles can also leave visible lines on baked goods.
To clean: Place in top rack of dishwasher. Replace if silicone retains smells even after washing.