Possible Clues:

• Substance added to a liquid to make it less volatile
• Poligrip, e.g
• Artist's agent rejecting one duty in five
• Paste securing denture
• A means of stabilising vehicle that's drawn up in late afternoon?
• Substance used to protect or stabilize
• Stabilising agent
• That's the way to take a stick to 10 at 1 into 5