We do not succeed in keeping this preparation stable: Lidocaine 5 g, Lanette SX 1.9 g, paraffin wax 9.5 g, propylene glycol 16.25 g, Vaseline 19g, Carbopol 980 0.35 g, ammonia 25% 100 mg and aqua cons 47.95 G. How do we best make this preparation?

Question

We do not succeed in keeping this preparation stable: Lidocaine 5 g, Lanette SX 1.9 g, paraffin wax 9.5 g, propylene glycol 16.25 g, Vaseline 19g, Carbopol 980 0.35 g, ammonia 25% 100 mg and aqua cons 47.95 G. How do we best make this preparation?