Cosmetics Formulation Development

Hello, I would like to ask because the serum formula has changed color after a period of time, so I tried it ActiveProtec OX into the serum formula. But it caused immediate discoloration. Instead of slowing down the color change But immediately changed. What is the reason? In the formula there are active ingredients as follows: Vitamin B3 3.54% Tranexamic Acid 1.98% 4MSK 1.52% 3-O-Ethyl Ascorbic acid 0.51% Please consider it.

Hello, please inform the composition of the formula 100% and the mixing process. If you have pH information, please let me know. Recommended to try the melt test. ActiveProtec OX 1% in water, then gradually add 4 ingredients. This one by one dissolves in water and can be checked.