can make it not precipitate by Use สารสร้างเนื้อเจล for oil: Yes, for example in this recipe. If you add Oil-Fix™ O ( Water-in-Oil , Oil Gel ling) about 2% should be enough let Vitamin C Ultra-Fine disperses and floats in the gel without precipitation.if the formula looks like this Vitamin C (L-ascorbic acid) (Ultra-Fine) 15% Isododecane 25% LipidSoft™ Dry II 60% problem is 1. Isododecane is probably insoluble. LipidSoft™ Dry II (waiting for staff to confirm) 2. Both substances do not have the same viscosity. Silicone Gel make powder L-ascorbic acid Settling, sleeping at the bottom of the container, the solution is to wait for the Staff to recommend it. But I try to figure it out for myself. should use a substance that is both Emulsifier and thickener the two substances + thicken the powder วิตซี not precipitated, don't know if there will be or not, wait for the Staff