Hello fellow formulators,
I'm trying to develop a double emulsion water based system for slow fragrances/natural extracts release. In order to develop such a system
I use Glycol Distearate (HLB = 1) and tween 20 (HLB = 16.7).
Phase 1 (90% of total recipe)
Glycol Distearate 10%
Phase 2 (10% of total recipe)
Sodium Benzoate, DHDH Hydantoin 6%
I melt and emulsify the Glycol Distearate in water of 80C (176F) degrees at 2500rpm for 2 mins, and then when it cools (room temp) I add my extract/fragrance mixture which is also pre-emulsified with water and tween 20 (2500rpm 2 min).
I mix the two phases at 4500rpm using a Silverson AX-1 batch mixer for 2 mins and then I get a white and stable emulsion.
I read from different publications that double emulsions tend to be cloudy or transparent due to lower particle size (micro or nano)
1. Do you consider my emulsion a double emulsion?
2. If not could you please make any suggestions on what to change/try?