Hello
1.Antioxidant Does it increase so it doesn't turn yellow easily?
There is no information that it can help the formula not deteriorate?
2.Optimizes skin radiance better with
Yes, but it's a research by Skinceutical done internally, which is not a Third Party or Independent Research. There are independent research results. This does not mean Skinceutical's research is entirely false. Or is it all true?
3. You can add it to the formula.
CE Ferulic Is it possible to replace any substance
can do this? Replace
Ethoxydiglycol