Hello everyone.
My first post here.
Over the past year I've been experimenting with creams, lotions and serums. I like to combine niacinamide, n-acetyl glucosamine, and resveratrol, as I find they compliment eachother well in efficiency. However, each time, whether it's a cream or serum, the color of the product changes into something much darker over the course of several weeks. I've narrowed it down to these 3 being the culprit, as all the other ingredients are different in each formulation.
I've been searching the net for an explanation, but can't seem to find anything.
Can anyone explain why this phenomonon occurs, or link me to any information? Many thanks for your time.
Regards, Kat.
Comments
I made this in late June. A simple moisturizer with 10% of tetrahexyldecyl ascorbate. I don’t have a formula in front of me now, but there’s nothing suspicious in it. Only non prone to oxidation esters, some dimethicone, chelators, antioxidants (BHT, tocopherol), emulsified with arlacel 165 and 0.3% of Sepimax Zen, preserved with parabens. I am subscribed to several Facebook formulation groups, and remember 6-7 people complaining that it happened to them as well. If this is not a typical reaction the only thing that comes to my mind that there might be something wrong with the material sold on DIY market (repackers). Maybe they don’t store it properly or something..