Terra is a silicone-based lubricant by ourselves, KewbzUK.
At 1000cst, Terra is a thin silicone oil that aids in the smooth turning of any puzzle. Extensive testing has gone into each lubricant we design and has received great reviews from the trials we have run. Perfect for core, hardware or piece/piece contact points.
Please do not ingest or get Terra in your eye. Seek medical advice if needed.