![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 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](https://preview.redd.it/foxtale-says-that-their-vitamin-c-is-effective-till-it-v0-7tpys35gk4ja1.jpg?width=640&crop=smart&auto=webp&s=aeabe21f7f88efb2ba6e76a3c20f51ee37860f49)
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
![DearKlairs DearKlairs Freshly Juiced Vitamin Drop, 5% Hypoallergenic pure vitamin C serum, 1.18oz | ascorbic acid vitamin c serum, antioxidant serum for face, korean skincare : Amazon.co.uk: Beauty DearKlairs DearKlairs Freshly Juiced Vitamin Drop, 5% Hypoallergenic pure vitamin C serum, 1.18oz | ascorbic acid vitamin c serum, antioxidant serum for face, korean skincare : Amazon.co.uk: Beauty](https://m.media-amazon.com/images/I/61C-h6AKR2L._AC_UF350,350_QL80_.jpg)
DearKlairs DearKlairs Freshly Juiced Vitamin Drop, 5% Hypoallergenic pure vitamin C serum, 1.18oz | ascorbic acid vitamin c serum, antioxidant serum for face, korean skincare : Amazon.co.uk: Beauty
![product question] Klairs Vit C, still good or should I stop using it? It's slightly yellowish irl.. : r/SkincareAddiction product question] Klairs Vit C, still good or should I stop using it? It's slightly yellowish irl.. : r/SkincareAddiction](https://i.redd.it/egmvfrmjjdb01.jpg)