How do I best prepare this formula? Salicylic acid 25g saponin Coaltar 90g arachide Oil AD 300ml

I suspect there is no objection to replacing arachide oil with castor oil. The latter is soluble in alcohol and vice versa. So I think LCD dissolves in castor oil and presumably also salicylic acid. If 25 g does not dissolve completely then the unresolved suspension must be suspended.