Cosmetics Formulation Development

In the ingredients there are Vitamin B3 , wrinkle lax, Glutathione , Hyaluronic​ (Standard​ Molecule),

Apple Stem Cell, Pro Polymer , DI Water mixed after 3-4 months. The mixture begins to turn yellow, the longer it lasts, the more yellow it becomes. May I ask which one causes the discoloration?

hello

It can happen for many reasons. It is recommended to add ActiveProtec OX 1% to the formula to help prevent discoloration.