I make the above recipe a week at a time and you have to keep it in the fridge! Once you have the Vitamin C powder in the bottle with the HA serum, shake shake shake that up really good. You will visibly see the serum turn from cloudy to clear. That’s how you know it’s done.
Notes
Remember to put this in the fridge so that the Vitamin C does not oxide. If you use this twice a day (morning and night), this mix should last six days.