[Sil]

For this type of gels, I usually use the Brookfield DV-E, spindle 05 or 06, 10 to 30 rpm.

[Sil]

 Hi PeiHoong 
I suggest you to review the composition of oils: you should use oils with wetting pigment properties ( medium to high polar emollients). In your formula you can increase the amount of Pentaerytryl Tetraisosterate.
Another thing: It is better if you don’t use magnetic stirrer, because it attracts iron oxide and the product can change color.

[Sil]

EVchem said:

I’m not a color cosmetic formulator, but try lowering castor and increasing grapeseed? Try using just enough castor oil to disperse the oxides

Hi @chickenskin,
I agree with  @EVchem, in addition you can try increasing the amount of Silica that helps you with its oil absorption properties.