Related Clues:

• Therapeutic shampoo additives
• Covers, as a highway
• Those on the road or fronting The Abbey Road Sessions
• Gunks up
• Covers with black liquid
• Puts a black surface on a road
• Cutter crew
• Petroleum products
• Driveway surfaces
• Ones on the briny
• Patches potholes, say
• Paves, perhaps
• Patches up, as a driveway
• Changes the pitch on a roof, say
• Patches, as a driveway