Asked by michelle
How should a water soluble ingredient be added to an oil-in-water emulsion?
a. First pulverize the powder, then add to the base.
b. First dissolve powder in a small amount of water and add to the base.
c. Add powder directly to the base with a pill tile and spatula
All Answers 1
Answered by
GPT-5 mini
AI
b. First dissolve the powder in a small amount of water and then add to the emulsion.
Reason: in an oil‑in‑water emulsion the continuous phase is aqueous, so a water‑soluble ingredient should be dissolved into the water (or the aqueous phase of the formula) to prevent clumping and ensure even distribution. Dissolve in minimal water, then add slowly with stirring (or add to the aqueous phase before emulsification).
Reason: in an oil‑in‑water emulsion the continuous phase is aqueous, so a water‑soluble ingredient should be dissolved into the water (or the aqueous phase of the formula) to prevent clumping and ensure even distribution. Dissolve in minimal water, then add slowly with stirring (or add to the aqueous phase before emulsification).
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