- How are reviewers describing this item?
good, quality, great, excellent and perfect.
- Our engine has detected that Amazon has altered, modified or removed reviews from this listing. We approximate total reviews altered up to 6.
- Previous analysis of this listing was an F grade.
- Our engine has analyzed and discovered that 24.4% of the reviews are reliable.
- This product had a total of 67 reviews as of our last analysis date on Mar 20 2020.
Posted by a reviewer on Amazon
I'd been researching vitamin c serums but saw a lot of people mention that they start to oxidize as soon as they're opened (which is easy to spot because they turn a coppery-orange colour) and once the serum has oxidized, it's no good to your skin.