1.
Ethoxydiglycol Solvent
Ferulic Acid can also dissolve
Vitamin E dl-alpha tocopherol or
Butylene Glycol 2. If yes, when using
Vitamin E and
Ferulic Acid dissolved in
Ethoxydiglycol finished Dissolve in water that mixes
Vitamin C L
ascorbic acid standard 15% or not? // If yes, please set the % of
Ferulic Acid ,
Vitamin E ,
Ethoxydiglycol 3. In the formula, if add
Sym White or activate recorcinol , together with
Phospholipid and
Pro Polymer in the formula or not?
Sym White and activate
resorcinol , which one would the officer recommend? In regards to the effect of whiteness more than each other. without counting the more irritating because I have tested both of them. Not allergic or irritating, if not allergic, which one is more suitable? In the opinion of the staff 5.
Laurocapram used for
นำพาสาร dissolved in water and another in oil can put both kinds in the same formula? Do I have to reduce the % to use together? 6.
Phospholipid How many
Phospholipid should be used for use in
นำพาสาร that dissolves in water and oil. Thank you.