Wise Owl Bad Ace Brush Soap & Preserver

A thick brush soap and preserver for paint brushes, made with high-quality organic oils. It's thick on purpose — it has "body" so it doesn't slip through your fingers and down the drain like thinner natural soaps — and it softens stiff bristles while it cleans, so it extends the life of both synthetic and natural-bristle brushes. It even softens painters' hands along the way.

• Scents: Lemon Verbena, Unscented, Bourbon Vanilla
• Works on: synthetic and natural-bristle brushes
• How to use: rinse brush in warm water, apply soap, swirl to lather, massage into bristles, rinse, dry, use, repeat
• Ingredients: filtered water, olive fruit oil, coconut oil, potassium hydroxide, sodium alginate, natural fragrance, essential oils
• Brand: Wise Owl Paint
• Price: $19.99

Will it revive an old brush I left paint on? That's exactly what it's for — it softens stiff, paint-caked bristles and extends brush life. Does it work on synthetic brushes too? Yes, synthetic and natural bristle.