Question
Posted on: November 21 20165% urea 20% White Vaseline Cetomacrogol Cream unbuffered without sorbic acid ad 100g
Answer
If I just continue on the name "Vaseline Cetomacrogolcrème" then I find in a formulary following composition
Cetomacrogol 3 G; Cetostearyl alcohol 12 g; liquid paraffin wax 12 g, propylene glycol 10 g; White Vaseline 20 g; Water AD 100 g
This cream contains 20 g of petroleum jelly, is unbuffered and does not contain sorbic acid. Propylene glycol is used as a preservative.
The doctor still asks 5% urea so the amount of water to add 5 g will need to be reduced.
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Another solution, proposed by Apoth. C. Andries from Herentals, for which thanks, exists in the use of the Cetomacrogol cream FNA without sorbic acid.
Cetomacrogol 1000 3g Lanette O 12g; Sorbitol powder 2, 8g; Cetiol 20g; Purified water ad 100g. This cream is much less consistent than Cetomacrogol cream TMF and will allow the addition of 20% Vaseline without problem.