Cosmetics Formulation Development

I would like to inquire as follows. 1. Required. แอลกอฮอล์ Glycerin is food grade? Glycerin or Propylene Glycol then must enter สารกันเสีย ? 3. If you want to add moisture, add Double Hyaluron 4. สารกันเสีย use Mild Preserved 5. What is the age of the ingredients you have to depend on?

Hello 1. It is not necessary to use Ethyl Alcohol food grade in the product wash your hands found in some brands that try to advertise that using food grade is safer is a misunderstanding Or is it an attempt to "create" a misunderstanding? to consumers without knowledge If you want to know the reasons Study as follows: - The substance used in making denatured alcohol is Denatonium and the reason for making it denatured. - Safety of Denatonium in oral use. (at a rate of 10ppm) 2. Gel แอลกอฮอลล์ wash hands or products containing elements of แอลกอฮอลล์ Up to 70% not required. สารกันเสีย again if you still need to use it. สารกันเสีย to กันเสีย that formula means that something is wrong with the formula. and means that product Not really effective in sterilization. 3. Can I do it?