Using Polyhydroxystearic Acid (Low Viscosity) for Pigment Dispersion in Cold Process Oil Phase

Yes, you can mix Polyhydroxystearic acid (Low Viscosity) into the oil phase first. Then, you can gradually add the pigment powder and use a homogenizer to disperse the pigments effectively. According to the product description, it blends into oil and helps disperse pigments.

Regarding your second question about cold process, heating the oil phase is generally not necessary if the Polyhydroxystearic acid (Low Viscosity) is in a liquid state at room temperature and blends well into your chosen oil. The product description mentions it is a liquid oil texture and should be left at room temperature if stored in a cold place before use. Therefore, you should be able to incorporate it into a cold process formulation by blending it into the oil phase at room temperature before adding and homogenizing the pigments.