Adjusting pH of Stabilized Vitamin C Serum (Ascorbic Acid) with Triethanolamine 99%

Regarding your question about adjusting the pH of Stabilized Vitamin C (Natural-C Glycol™) Serum using Triethanolamine 99%:

Yes, you can use Triethanolamine to increase the pH. However, as the staff mentioned, it is important not to raise the pH above 3.5. Raising the pH higher than 3.5 will cause the ascorbic acid type of Vitamin C in the serum to degrade quickly, reducing its effectiveness.

Therefore, while you can adjust the pH slightly using Triethanolamine, be aware that exceeding pH 3.5 is not recommended for the stability of the Vitamin C.