Hello..please ask Subject to adjust the Ph value of stabilized vitamin c (Natural-C Clycol) Serum I want to know how to adjust the ph to be suitable and how to adjust it.. Please ask for advice.. *******thank you very much********
Hello, the purpose of adjusting the pH of the members. Is for production or Triethanolamine ? Triethanolamine little by little until the pH rises to 3.5. Adjust it higher, because higher pH will cause Vitamin C deteriorates faster.