I have a w/o cream
Shea Butter 2-5%
Zinc Oxide 10-20%
Lanette O 1-3%
for emulsification used 6% of Span 80+Span 60 and added GMS. I feel it not homogenous enough and not stable enough,
So I added Polysorbate 60 which is o/w in very small percentage like 0.5% as a stabilizer which gave a good homogenous cream actually but not sure if the Emulsion has maintain w/o form and stability will be fine?!
Also I added Magnesium Sulfate 0.5-1% I have tried Xanthan but has not give good result,
I appreciate your help in this please....