Make your own Silicone Lube
The ratio of Cyclomethicone to put into the Dimethicone is about 1/2 gallon of Cyclomethicone to one gallon of Dimethicone.
You do not need very much of the Phenyl Trimethicone, this is mostly to give it a silkier feel.
Places to find ingredients in the US
1 gallon (Base Silicone 350)
Dimethicone:
https://lotioncrafter.com/products/dm350-dimethicone
http://www.chemistrystore.com/product.cgi?group=339&product=17661
1/2 Gallon (thinner)
Cyclomethicone:
https://lotioncrafter.com/products/lc995-cyclomethicone
http://www.chemistrystore.com/product.cgi?group=339&product=27367
4 ounces (silky feel)
Phenyl Trimethicone:
https://lotioncrafter.com/products/lc1550-phenyl-trimethicone
https://cosmetics.specialchem.com/selectors/s-ab-specialty-silicones/i-phenyl-trimethicone