One more question. Now, it will be mixed and excited. Now, there are Hyaluronic Acid Standard, Niacinamide, distilled water. I will ask if the Hya has to use cold water, right? Then I do this. - Soak in cold water 95 ml. 3 hours - Pour vit b3 4ml. Stir to dissolve (that is, we have to mix vit b3 wi...