How can 1.5 g of prednisolone be added to 25% benzyl benzoate emulsion TMF?

How can the incompatibility and solubility issues be resolved in a preparation containing 1% cignolin, 4% DMSO, 5% lactic acid, and 20% salicylic acid in 20cc elastic collodion, considering that DMSO is incompatible with collodion and there are solubility problems with salicylic acid and cignolin?

What is the best way to prepare a formulation containing 5% hydroquinone, 1% ascorbic acid, and 2% sodium hyposulfite in cetomacrogol cream up to 100 g?

What is the cause of the slight turbidity during preparation and the distinct white precipitate observed in the gel after 24 hours in a formulation containing 10 g diprophylline, 300 mg diphenhydramine HCl, 1 g Carbopol 940, 1.35 g TEA, 30 drops of lime blossom oil, 37,500 I.E. sodium heparin, and water up to 100 g, even when the pH is adjusted to 7 for the heparin?

Why does a W/O cream containing 4 g erythromycin, 5 g zinc oxide, and 0.1 g triamcinolone acetonide in AVA cream up to 100 g break after the addition of 1.82 g nystatine?

Is it possible to obtain a clear preparation for 'OIL WITH SALICYLIC ACID' FN VI?

Why does the following gel flocculate, even after adding NaOH to achieve an alkaline pH and potentially using macrogol 400 to triturate the active ingredients: phenylbutazone 5g, lidocaine HCl 2g, amyl salicylate 1g, methyl salicylate 1g, and carbomer gel up to 100g?