Hello, normally if
วิตามินซี has deteriorated to the point of being unusable. The color will be darker than the color of Betadine, if the member's color is dark to that level. Interfering with customer relations to request a product claim But if the intensity is not to such a degree The ingredients are also effective and can be used. The study team provided more information about the rate of deterioration of
Vitamin C usually begins to deteriorate from the date of production at a slow rate and so on, which members will see that when stored for longer It will have a darker color gradually. is the nature of
Vitamin C itself, in the form that is not Stabilized, will deteriorate at a high rate. (Day-Week) and stabilized patterns deteriorate at a slow rate. (several months - 2 years)