Cosmetics Formulation Development

Hello, I would like to ask you. I have a problem with separating the ingredients. Mix Butylene Glycol with Vitamin C (L-ascorbic acid) (Ultra-Fine). It takes time to shake it together. Is there a solution to this problem? Thank you in advance

Hello, the reason is because Vitamin C cannot dissolve in Butylene Glycol can be exhausted. A possible solution is to reduce the ratio of Vitamin C down to 2-3% (the rest is Butylene Glycol all) should be completely soluble. Shaking doesn't help dissolve it completely. The insoluble part will still be suspended in Butylene Glycol as usual.