Question
Posted on: May 23 2017How to make a ' viscous solution '?
What is known as ' viscous solution ' in the following preparation:
R/Urea 20%
Propylene glycol 60%
Lactic acid 10%
In viscous solution ad 20ml.
Answer
Take a small size glass and dissolve in 12 ml propylene glycol The urea and lactic acid. You will see how much volume is left. Gradually fill with Carbopol gel. Mix after each addition. Place the whole in the refrigerator overnight to make everything swell.