Is there anything wrong with this shampoo composition: 30 g LCD, 12 g salicylic acid, 15 g ethanol, 9 g Texapon KD, 6 g sodium chloride, preservative qs, and water up to 300 g?

Is it possible to prepare a mouthwash based on hydrocortisone sodium succinate as a replacement for Buccalsone tablets (hydrocortisone sodium succinate 2.625 mg), which are no longer commercially available?

Which incompatibilities can occur with dihydroxyacetone (DHA)?

Why does a non-ionic aqueous cream consisting of 3 g Cetomacrogol 1000, 12 g Lanette O, 10 g Cetiol V, 10 g propylene glycol, 0.2 g sorbic acid, and purified water up to 100 g remain too liquid after cooling and become unusable upon adding an active ingredient, despite previously being prepared without issues, and could this problem be related to the heating process?

How can a mouthwash containing 1.6 g phenosalyl, 37.5 g borax, 37.5 g sodium bicarbonate, 10 g sodium salicylate, 3 g mint, 62.5 g simple syrup, and distilled water up to 500 g be prepared to prevent the formation of crystals overnight, given that borax exceeds its solubility limit and that lowering the dose may reduce activity while adding glycerol is hindered by taste concerns?

What is the preparation method for ear drops containing 2 g of Vioform, 4 g of Prednisolone, 94 g of Isopropanol, and Aqua up to 200 ml?

What are the stability problems of a solution containing 3 grams of Phenobarbital sodium and purified water up to 300 cc?