Cosmetics Formulation Development

If you want to make the color darker and black retain color for a long time What should I do? Usually, we use it with water-soluble colors as a coloring. ** Make eyebrow work.

Hello DHA is directly water soluble. But there are limitations. 1. Absorption into the skin. In order to work on the skin to the fullest. will have to add a helper นำพา eg Ethoxydiglycol or Dimethyl Isosorbide (DMI) 2. DHA easy to deteriorate, shorten product shelf life, add experimental ActiveProtec OX 1% + Vitamin E Acetate 0.1% To help slow down the quality of DHA

We are DHA alone is yellowish brown. But if you want to leave the color น้ำตาลเข้ม Black tone must be mixed Easy Tan too?

Hello, yes, you need to try to apply it together.