Color fades completely off in shower gel
I have this weird color stability problem with my shower gel. In my formulation I use 1 % solution of these colors: CI 17200 (0,066 %), CI 14700 (0,0195 %). I know it’s not very good if the color is not very intense, but my formulation contains 0.1% Benzophenone-4 and the bottles contain 1% anti-UV protection. The problem is that from one batch of shower gels, the color faded completely off only in some of them. I thought the problem was with the bottles, but the manufacturer denies that there is anything wrong with them. Would anyone please know what else could be causing the discoloration in only some samples?
Thank you very much for any advice.
- This discussion was modified 5 months, 1 week ago by Vera.urb.
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