its in a large spray can and its called 10k Boost you spray it into your inlet i think, its meant to remove old deposits and build up of crud etc i found this on the net:
10K Boost Warning This Product Is Excellent ! 10K Boost Will Improve Power! New Improved Formula Single Can Application..It Works !
10 K Boost Independent tests prove It More Power Better Acceleration...........
Toyota Corolla 16v Flywheel + 5.5 BHP Wheels + 3.7Bhp Torque +4.8lbft
Vauxhall Astra GTE Flywheel + Wheels + 4.8bhp Torque +3.9lbft
LOOK ! New Improved Formula Now Supplied In Giant Size Single Can Application
What 10K Can Do For You ? Improved Performance Smoother Running, Reduced Fuel Usage, Prolongs Engine Life, Less Harmful Emissions.
10K Is so easy to use requiring no special skills.