To formulate the skin yogurt formulation, first heat parts A
and B in separate vessels to 70°C, with mixing. With both phases
uniform, slowly add part B to part A using moderate agitation.
When the batch is uniform, gradually cool to 55°C with
continued mixing. At 55°C, add part C (Carbopol Aqua CC
polymer). As gradual cooling and mixing continues, add part D
(glycolic acid) and pre-mixed part E and adjust pH to 3.5-4.0
with part F (triethanolamine). When the batch reaches 45-50°C,
add part G ingredients one at a time with mixing. Continue
cooling and mixing until completion at 35-40°C.