Home Cosmetic Science Talk Formulating How to dissolve Ascorbic Acid in water?

  • How to dissolve Ascorbic Acid in water?

    Posted by Heath0o7 on June 15, 2024 at 3:41 am

    Hi all,

    I’m trying to make a vitamin C Serum, but I’m having trouble dissolving AA in water without using heat. How do you dissolve it? My formula is as follows: the pH is 3.4 and it’s a 30g batch

    Distilled water

    Propylene Glycol

    Euxyl PE 9010

    Hexanediol

    Tetrasodium Glutamate Diacetate

    HEC

    Phase B:

    Ceteareth-20

    Polysorbate-80

    Squalane

    Phase C:

    Euxyl k712

    Fragrance oil
    A.Arbutin
    Ferulic Acid 0.5%
    Tocopherol
    Ascorbic Acid 18% (15% free acid)

    Sodium Hydroxide

    fareloz replied 1 month ago 2 Members · 1 Reply
  • 1 Reply
  • fareloz

    Member
    June 16, 2024 at 7:03 am

    Ascorbic acid is very soluble in water. If you have problems that means you have too little of water to dissolve it.

    As I see you are trying to make a tweaked Skinceuticals formula. They use Ethoxydiglycol, while you are using Propylene Glycol. AA is more soluble in ethoxy while not really soluble in PG. Plus your percentage of AA is higher (18% comparing to 15% of Skinceuticals).

    Ethoxydiglycol is hard to source and it is pricey, so instead of it and PG I can suggest using Propanediol. Ascorbic acid has good solubility in it, but it might take some time to stir.

Log in to reply.