Best Dandruff Shampoo? 2,924 Reviews of Jupiter, OUAI and Biolage

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Review-analysis guide: 2,924 customer reviews read on Ulta (October 30, 2026), sorted and counted by us; product details from Amazon listings checked October 30, 2026.

By The Beauty Read · Checked October 30, 2026 · AI-assisted research and editing · Contains Amazon affiliate links

No dandruff shampoo here wins cleanly. Biolage Scalp Sync Anti-Dandruff Shampoo (paid link) drew the highest share saying their flakes eased (53% of 632 usable Ulta reviews), but most of those reviews are from 2015 to 2021. The JUPITER Anti-Dandruff Balancing Shampoo (paid link) drew flake-relief mentions from 43% and itch-relief mentions from 24% of 1,642 reviews mostly posted on Jupiter's own site, and newer ones were less favorable. The OUAI Anti-Dandruff Shampoo (paid link) kept just 48 usable reviews, a small sample.

Best dandruff shampoo: what 2,924 reviews say

A dandruff shampoo has one job most of us care about: fewer flakes and less itch, without drying out our hair. We read every review on three Ulta pages, 2,924 in all, to see how often reviewers said their flakes or itching eased and how often they said it did nothing, dried their hair or caused a reaction: JUPITER Anti-Dandruff Balancing Shampoo, OUAI Anti-Dandruff Shampoo and Biolage Scalp Sync Anti-Dandruff Shampoo. These are reviewer reports, not proof that a shampoo works on a scalp condition. [R-ULT-JUP] [R-ULT-OUA] [R-ULT-BIO] [A1] [A2] [A3]

Biolage drew flake-relief mentions from 53% of 632 usable reviews and Jupiter from 43% of 1,642. In reviews mostly posted on Jupiter's site, Jupiter drew more itch-relief mentions (24% against 18%) and fewer dryness complaints (1% against 5%). Both drew no-help complaints from about one in ten (10% and 12%). One- and two-star shares were 9% for Jupiter and 16% for Biolage. OUAI kept 48 usable reviews, a small sample: 18 said their flakes eased, 21 said it did not help flakes or itching, and 52% gave one or two stars. [R-ULT-JUP] [R-ULT-OUA] [R-ULT-BIO]

Which reviews we read, and the 602 we set aside

We read all 1,772 reviews on Jupiter's Ulta page, all 511 written reviews on OUAI's and all 641 on Biolage's 13.5 oz page, then kept 2,322 and set aside 602. Jupiter's page needs a plain warning: 1,770 of its 1,772 reviews carry Ulta's 'Jupiter site' badge, meaning they were posted on Jupiter's own site and shown on Ulta. Only 2 were written on Ulta. Brand-site reviews can lean positive, so read every Jupiter number with that in mind. 104 of them were about other Jupiter products, and we set those aside. [R-ULT-JUP] [R-ULT-OUA] [R-ULT-BIO]

What we set aside for OUAI: 452 of its 511 Ulta reviews came from three months. 393 were posted from May 10, 2024 to June 16, 2024, and 354 of them said the product was gifted, complimentary or free; 59 came from February 6, 2025 to February 24, 2025, 57 of them gifted or free. 2 of those 452 gave one or two stars, against 52% of the 48 OUAI reviews we kept (small sample). Across all three pages, beyond those, 15 more reviews said the product was free, 15 repeated on the same page and 16 were about shipping or another product, not yet used, not in English or had no text. [R-ULT-JUP] [R-ULT-OUA] [R-ULT-BIO]

Some cautions on timing. Jupiter's reviews read less favorably over time: none of 295 usable reviews from 2020 and 2021 gave one or two stars, 6% of 719 from 2022 and 2023 did, and 17% of 628 from 2024 to 2026 did. Biolage's page goes back to 2015, and 495 of its 632 usable reviews are from 2015 to 2021, so older reviews may describe an earlier version. The three pages differ in age and source, so treat gaps of a few points as close. [R-ULT-JUP] [R-ULT-OUA] [R-ULT-BIO]

Jupiter dandruff shampoo reviews, mostly from Jupiter's own site

Jupiter's Amazon listing names pyrithione zinc 1% as the active ingredient and, in its title, calls the shampoo color-safe, sulfate-free and paraben-free. Its bullets mention squalane, sugar kelp and aloe vera and a fragrance with notes of vanilla, lavender and mint. We link the Anti-Dandruff Shampoo option sold by Zero Flakes Given and shipped by Amazon; the listing does not state a size. Amazon calls it Jupiter Anti Dandruff Shampoo, while Ulta lists JUPITER Anti-Dandruff Balancing Shampoo. [A1]

Across 1,642 usable reviews, 705 (43%) said their flakes eased or their dandruff improved, 389 (24%) mentioned less itching or a calmer scalp, 281 (17%) said it left their hair soft, smooth, shiny or not stripped and 221 (13%) said they would buy it again. 161 (10%) said it did not help flakes or itching, or stopped working, 65 (4%) found it greasy, heavy or limp, or said it left residue or buildup, and 22 (1%) said it dried out their hair or scalp. [R-ULT-JUP]

The newer reviews read differently. From 2024 to 2026, 243 of 628 (39%) said their flakes eased, against 43% overall; 18% mentioned less itching, against 24%; 100 (16%) said it did not help flakes or itching, against 10%; and 105 (17%) gave one or two stars, against 9%. Flake relief was 42% in 2020-21 and 47% in 2022-23. We cannot tell why the later reviews are less favorable. [R-ULT-JUP]

See Jupiter Anti Dandruff Shampoo on Amazon (paid link) · This link opens the Anti-Dandruff Shampoo option sold by Zero Flakes Given and shipped by Amazon; the listing does not state a size, and Ulta calls it JUPITER Anti-Dandruff Balancing Shampoo.

Does OUAI anti dandruff shampoo work? A small sample

OUAI's Amazon listing says in a bullet that the shampoo is formulated with salicylic acid and propanediol caprylate, but the ingredient text on the same page does not name salicylic acid. Another bullet cites a clinical study of 25 participants. The directions say to lather it on the scalp, leave it on for five minutes and rinse, at least twice a week. We link the 10 fl oz bottle sold by FRONT ROW and shipped by Amazon. [A2]

The gifted-review finding is the main story here. Of the 511 written reviews on OUAI's Ulta page, 452 were posted in May and June 2024 and February 2025, and 411 of those 452 said the product was gifted, complimentary or free. We set all 452 aside, plus 10 more free-product reviews and 1 repeat, which leaves 48. [R-ULT-OUA]

In that small sample of 48, 18 said their flakes eased and 8 mentioned less itching, while 21 said it did not help flakes or itching, 8 said it dried out their hair or scalp and 4 named burning, stinging, redness, a rash, bumps or itching that started or got worse. 25 of the 48 (52%) gave one or two stars. 26 of the 48 are from 2023, before the gifted months. So, does OUAI anti dandruff shampoo work? This small sample leans mixed, and it is too small to compare with the other two. [R-ULT-OUA]

See OUAI Anti-Dandruff Shampoo, 10 fl oz on Amazon (paid link) · This link opens the 10 fl oz bottle sold by FRONT ROW and shipped by Amazon.

Biolage anti dandruff shampoo review: older praise, newer doubts

Biolage's Amazon listing says Scalp Sync is formulated with pyrithione zinc and that it controls the appearance of visible flakes, soothes scalp irritation and leaves hair clean and comfortable. Its title calls it vegan and cruelty-free. We link the 13.5 oz bottle shipped and sold by Amazon.com, the same size as the Ulta page we read. Some older Ulta reviews spell the line ScalpSync. [A3]

Of 632 usable reviews, 333 (53%) said their flakes eased, the highest share among the two larger samples, 126 (20%) liked the smell, 125 (20%) said they would buy it again and 115 (18%) said it left their hair soft, smooth, shiny or not stripped. 75 (12%) said it did not help flakes or itching, 34 (5%) said it dried out their hair or scalp and 19 (3%) named burning, stinging, redness, a rash, bumps or itching that started or got worse. [R-ULT-BIO]

Time matters here. Of 495 usable reviews from 2015 to 2021, 13% gave one or two stars and 52% said their flakes eased. Of 64 from 2024 to 2026, 26 (41%) gave one or two stars and 26 (41%) said their flakes eased. 10 of those 64 said they shed or lost hair and blamed the shampoo, against 5 in all the years before, and 5 reviewers overall said the formula, scent or packaging changed and they like it less. That recent group is small, and older reviews may describe an earlier version. [R-ULT-BIO]

See Biolage Scalp Sync Anti-Dandruff Shampoo, 13.5 oz on Amazon (paid link) · This link opens the 13.5 oz bottle shipped and sold by Amazon.com, the same size as the Ulta page we read.

How each dandruff shampoo feels on dry, itchy or colored hair

Shopping for a dandruff shampoo for dry itchy scalp? Jupiter's reviews are mostly from its own site. Of reviewers who said they have a dry scalp, 97 of 157 for Jupiter and 68 of 89 for Biolage said their flakes eased, and 58 of 157 and 24 of 89 mentioned less itching. 2 of those 157 Jupiter and 7 of 89 Biolage reviewers said it dried them out, and 1 of 157 and 0 of 89 named burning, stinging, redness, a rash, bumps or new or worse itching. OUAI had 7 dry-scalp reviewers, 6 of whom said their flakes eased and 0 of whom named a reaction (small sample). [R-ULT-JUP] [R-ULT-OUA] [R-ULT-BIO]

Does dandruff shampoo dry out hair? Few of these reviewers said so: 1% for Jupiter and 5% for Biolage, and 8 of OUAI's 48 (small sample). On feel, 18% of Biolage and 17% of Jupiter reviewers said their hair was left soft, smooth, shiny or not stripped, about the same, while 6% and 4% found it greasy, heavy or limp, or said it left residue or buildup. [R-ULT-JUP] [R-ULT-OUA] [R-ULT-BIO]

If you need a dandruff shampoo for color treated hair, Jupiter's Amazon title calls it color-safe; the OUAI and Biolage listing text we read does not say. Of reviewers who said their hair is colored, 1 of 31 for Jupiter and 5 of 35 for Biolage said their color faded. OUAI had 1 such reviewer (small sample). These groups are small. [R-ULT-JUP] [R-ULT-OUA] [R-ULT-BIO] [A1]

Keep reading

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• Hair spray: Elnett, Living Proof and Sexy Hair
• Leave-in conditioner: amika, Briogeo and Kristin Ess

Frequently asked questions

Is Jupiter shampoo good for dry scalp?

In its reviews, it leans yes. Of 157 Jupiter reviewers who said they have a dry scalp, 97 said their flakes eased, 58 mentioned less itching and 2 said it dried them out, while 12 said it did not help flakes or itching. Keep in mind that 1,770 of Jupiter's 1,772 Ulta reviews were posted on Jupiter's own site, which can lean positive.

Is Biolage Scalp Sync good for dandruff?

Older reviews lean yes, newer ones are mixed. Of 632 usable Ulta reviews, 53% said their flakes eased, but 495 of them are from 2015 to 2021. Of 64 reviews from 2024 on, 41% said their flakes eased and 41% gave one or two stars. These are reviewer reports, not a medical result, and older reviews may describe an earlier version.

Does dandruff shampoo dry out hair?

Few reviewers of these three said so. 22 of 1,642 usable Jupiter reviews (1%) and 34 of 632 Biolage reviews (5%) said it dried out their hair or scalp, left it straw-like or tangled; Jupiter's reviews are mostly from its own site. OUAI drew 8 such reviews out of 48, a small sample. More reviewers said their hair was left soft or not stripped (17% and 18%).

Does dandruff shampoo cause hair loss?

Our reviews cannot show what causes shedding; they only show what reviewers blamed. 15 of 632 usable Biolage reviews (2%) said they shed or lost hair and blamed the shampoo, 10 of them among the 64 from 2024 on, a small group. Jupiter drew 1 such review out of 1,642, and OUAI none out of 48 (small sample).

Which is the better dandruff shampoo for color treated hair?

The reviews cannot pick one. Jupiter's Amazon title calls it color-safe, and the OUAI and Biolage listing text we read does not say either way. Of reviewers who said their hair is colored, 1 of 31 for Jupiter, whose reviews are mostly from its own site, and 5 of 35 for Biolage said their color faded, while 17 and 20 said their flakes eased. OUAI had 1 such reviewer (small sample). These groups are small.

Why did we set aside most OUAI reviews?

Because most came from gifted-review months. Of the 511 written reviews on OUAI's Ulta page, 452 were posted in May and June 2024 and February 2025, and 411 of those said the product was gifted, complimentary or free. We set aside all 452, plus a few other free or repeated reviews, which left 48 usable reviews, a small sample.