![product question] is this oxidized? It has been this color since I first opened it but it looks pretty dark? Ok to use? : r/SkincareAddiction](https://i.redd.it/product-question-is-this-oxidized-it-has-been-this-color-v0-n5jfq25gtv6a1.jpg?width=3024&format=pjpg&auto=webp&s=c53685dc976afea007c7474d3a241ce32479f8e1 "product question] is this oxidized? It has been this color since I first opened it but it looks pretty dark? Ok to use? : r/SkincareAddiction")
product question] is this oxidized? It has been this color since I first opened it but it looks pretty dark? Ok to use? : r/SkincareAddiction
![Product question] just got my mad hippie vitamin c serum, is this colour normal? Exp date is in 2021 : r/SkincareAddiction](https://i.redd.it/f7qjvujt7wf21.jpg "Product question] just got my mad hippie vitamin c serum, is this colour normal? Exp date is in 2021 : r/SkincareAddiction")
Product question] just got my mad hippie vitamin c serum, is this colour normal? Exp date is in 2021 : r/SkincareAddiction
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Foxtale says that their Vitamin C is effective till it turns very dark but I've read (probably on this sub only) that we should discontinue use right when colour starts changing. My
