Manuscript page: Superior insectoid oil is an alchemy formula in The Witcher 3: Wild Hunt that is needed to craft superior insectoid oil.
In the base game it can only be found at random diagram locations, but with the Blood and Wine expansion it can also be purchased from alchemists in Toussaint:
- Merchant in the Perfumery in Beauclair
- Wine Merchant at Chuchote Cave
- Wine Merchant at Dun Tynne Hillside