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
What the gurus are saying
The OS-01 peptide is the detail that keeps coming up, with experts saying it helps clear out aging cells that stir up scalp inflammation. Several describe less shedding and a light feel with no residue or minty tingle, though some are still hoping for regrowth rather than seeing it. Those who use micro-needling may want to stamp the serum on rather than roll it, since rolling over fragile strands could cut them.
What they liked
What they flagged
Nothing. None of the experts who reviewed it raised a problem.
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Key actives
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Where to buy
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.
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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