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Can oxidized vitamin C be used?

using the bottle on the right containing vitamin C serum for a few months now. Recently, I noticed it has darkened significantly compared to when I first got it. But what surprised me more was when I opened a new bottle today (the one on the left), it's noticeably lighter in color.

Has anyone else experienced this with their vitamin C serums? Did you continue using it despite the change in color? I'd love to hear your thoughts and experiences on whether oxidized vitamin C still provides the same benefits. Thanks a bunch!

#skincare #vitaminC #oxidation #AskLemon8

2024/4/5 Edited to

Oxidized vitamin C, often seen as a change in color, raises questions about its efficacy. Vitamin C serums are popular for their antioxidant properties and skin benefits like brightening and anti-aging. However, oxidation can lead to changes in potency. A product like SkinCeuticals Phloretin CF features 10% L-Ascorbic Acid, known for its stable vitamin C benefits. When a vitamin C serum darkens, it can indicate degradation, leading to questions on effectiveness. Some users still report positive outcomes even with oxidized products, citing that minor color changes may not significantly affect results. To ensure your serum maintains its efficacy, store it away from light and heat, and check the expiration date. Always do a patch test with any skincare product to gauge skin response before full application.

14 comments

It's your choice but I don't recommend to use that. It's no longer effective ❤️

Using oxidized vitamin C on your skin isn't recommended. It's less effective, can cause irritation, and may not provide the intended skincare benefits. It's best to use fresh and stable vitamin C products to ensure effectiveness and avoid potential skin issues.

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