Guru Score
The Guru Score: every expert's verdict on a product, in one simple number.
Under the score you'll see how many experts weighed in, or "Early verdict" while only a few have. Paid takes count for half in the score.
Guru Certified means at least 6 experts, a score of 85% or more, and almost no Nays.
How we score →Yay
Early verdict · Few reviews so farWhat the gurus are saying
Unanimous yay from 2 reviewers. Dr. Somji Skin and Dr. Vanita Rattan both rate it highly. Top take: "Magnesium ascorbyl phosphate is fantastic because it's a stable derivative of vitamin C that you can keep in your cupboard for longer without worrying about the stability.", Dr. Somji Skin.
What they liked
What they flagged
Nothing. None of the experts who reviewed it raised a problem.
Best for
Type
Key actives
Formula notes
The concerns the experts tie this product to, in their own words. Paid and founder takes don't count.
Every take we've logged from this product's reviews across YouTube. Click any row to watch the moment they said it.
Independent of what the gurus think, this is what the published research supports about the main active ingredients here.
Yes. All 2 gurus who reviewed it give it their stamp of approval, for a Guru Score of 81%.
The Ordinary Magnesium Ascorbyl Phosphate 10% holds a Guru Score of 81%. That is our read on how warmly the experts talk about it, based on the verdicts of 2 expert reviewers we have collected.
Lower-priced products in the same category that the experts still rate highly.
See how they stack up →Other products the same gurus have weighed in on, plus more from this brand and category.
Compare side by side →Stories where our editors dug into this product or its brand.
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