Possible Clues:

• Body implant resin
• Organic compound that can be made from nice oils
• Stupid-sounding shape to enhance the figure
• Insulation material
• It's used in a range of substances e.g. synthetic rubber
• Isocline (anag.)
• ***Material in some implants
• Polymeric compound in breast implants
• I close in (anag.)
• Synthetic compound