Cosmetics Formulation Development

What kind of hya should I use as a serum mask? A type that can be applied all over the face and eyes and then put a cloth mask over it again.

Hello, I recommend you to try 4D Hyaluronic Acid

1. How many % is recommended to use for masking? 2. In the formula, add 1% powder B5, it will help each other. Or not necessary because hya helps with moisture enough. 3. Add Alpha Arbutin will this work? Then use a face mask to benefit... Is the skin in time to use it? Mask for 15 minutes.

Hello 1. Recommend 5% 2. Can work together but use Vitamin B5 Low rate is enough, recommend 1.0% 3. It can be done, but it benefits the skin. may not be fully Like leaving it on the skin, if using Alpha Arbutin recommend DMI 2% to help absorb more into the skin.