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
3 experts · Moderate agreementWhat the gurus are saying
Unanimous yay from 3 reviewers. Dr. Jenny Liu, Nipun Kapur, and Kelly Driscoll all rate it highly. Top take: "This has been really lovely for a couple reasons number one they have this kind of innovative penetration technology that allows the ingredients to instantly penetrate into the hair cuticles", Dr. Jenny Liu.
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 3 gurus who reviewed it give it their stamp of approval, for a Guru Score of 84%.
Shiseido Tsubaki Premium Repair Hair Mask holds a Guru Score of 84%. That is our read on how warmly the experts talk about it, based on the verdicts of 3 expert reviewers we have collected.
Lower-priced haircare products the gurus still rate highly, versus this luxury pick.
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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