An anti dandruff shampoo is chosen mostly from the label, and the active ingredient printed on the pack tells a reader more than the brand name does. Adults with white flakes and an itchy scalp will meet zinc pyrithione, ketoconazole, salicylic acid and several other actives while choosing in a pharmacy or on a shopping site. This guide looks at six shampoos from six brands, using only what the brand pages, pharmacy listings, the NHS and the American Academy of Dermatology (AAD) state.
Two decisions come before any brand. One is reading the active and its strength on the pack, and the other is settling the patch test and the washing frequency. A single brand page read for this guide shows why the first matters, since it lists ketoconazole at 2% in its description and at 1% in its hero ingredients line.
What the NHS and the AAD say about dandruff
The NHS describes dandruff as a common skin condition that causes white flakes and can leave the scalp dry and itchy. It says the condition is harmless and not contagious.
A yeast that lives naturally on the skin is listed by the NHS as one cause. The AAD, a dermatology body in the United States, says most people do not need medical care for dandruff.
Both pages name actives to look for, and the lists differ. The NHS advises a shampoo that contains one or more of ketoconazole, coal tar or salicylic acid. The AAD lists zinc pyrithione, salicylic acid, sulfur, selenium sulfide, ketoconazole and coal tar as over the counter actives.
The NHS says a shampoo can be used for up to 4 weeks to see whether it helps, and that trying more than one type may be needed.
Reading the active and its strength on the pack
Only three of the six shampoos in this guide name a recognised active. The Love Co and Nizoral list ketoconazole, and Head and Shoulders lists zinc pyrithione. Himalaya, Mamaearth and Dr Batra’s list botanical ingredients such as tea tree oil, and their pages give no concentration for any of them.
The Love Co page describes its Flake Free Anti Dandruff Shampoo as containing ketoconazole at 2%, while the hero ingredients line on the same page says 1%. The page gives no bottle size. A reader comparing the two numbers has to turn to the pack itself.
Nizoral’s listing on Apollo Pharmacy names ketoconazole as the key ingredient and does not state a percentage. The Head and Shoulders listing on the same pharmacy site names zinc pyrithione without a percentage as well.
The Love Co page also lists tea tree oil and peppermint as hero ingredients, again with no concentration. Brand claims on that page say the shampoo helps with severe dandruff, scalp itchiness and irritation, and reduces flaking and redness. Those are the brand’s own statements, and the page does not attach a study to them.
Patch test, washing frequency and doctor visits
The Love Co page says to test the shampoo on a small area first and adds that natural ingredients can still cause allergies. It also says the product is for external use only, and that a rash or allergy means stopping use and seeing a doctor.
Washing twice a week, or once a week for a sensitive scalp, is what the brand FAQ suggests. Mild tingling or warming is described there as normal.
Other pages give their own patterns. Mamaearth says to use its shampoo up to twice a week with at least two days between washes. Nizoral says twice a week or as a healthcare professional directs. Himalaya says regular use up to 3 times a week gives flakes that are up to 100% absent, and a footnote limits that claim to visible flakes.
The AAD page links frequency to hair type. For fine, straight or oily hair it suggests about twice a week, and for coarse, curly or coily hair about once a week, with the shampoo applied only to the scalp. It adds that some products need to sit on the scalp for 5 to 10 minutes before rinsing, and that the exact time varies by product.
Beyond the shampoo itself, the NHS page lists several situations in which it advises seeing a general practitioner (GP). One is symptoms that continue after at least 4 weeks of shampoo use. Others are severe dandruff, a very itchy scalp, a red or swollen scalp, and flaky itchy patches on the face or body.
Six shampoos from six brands
Specifications in the cards below come from each product page. Four of the six, Nizoral, Head and Shoulders, Mamaearth and Dr Batra’s, were read on pharmacy listings from Apollo Pharmacy and 1mg, not on brand sites. The Love Co and Himalaya were read on their own brand sites.
Page type matters in the table above the cards, since a pharmacy listing may leave out directions that a brand site would include.
The Love Co shampoo is the ketoconazole option with brand claims about itch and irritation, and it is also the one with the conflicting strengths. Nizoral is the second ketoconazole listing, in a 100 ml size, with directions for twice weekly use.
Head and Shoulders Smooth and Silky is the zinc pyrithione listing. The pharmacy page describes it as reducing visible flakes with regular use, for dry, damaged or frizzy hair, in a 340 ml size, and it gives no directions for use.
Himalaya Cooling Mint lists tea tree oil, mint, soy proteins and wheat proteins. Its sizes are 180ml and 340ml, though the page title mentions two other sizes.
Mamaearth Tea Tree and Ginger comes in 250 ml and lists tea tree oil, ginger oil and vitamin E. The pharmacy page does not describe it as medicated.
Dr Batra’s Dandruff Cleansing Shampoo lists thuja extract and tea tree oil among its key ingredients, in three sizes. The page describes Ziziphus extract as clinically proven for anti dandruff, though that extract is missing from the key ingredients list, and the main benefit stated on the page is hair fall control.
Each page points towards a different reader. A reader with flaking and itch who wants a ketoconazole shampoo and is willing to patch test first matches the Love Co listing. Nizoral matches a reader who will wash twice a week and who will stop if irritation or a rash appears.
Dry, damaged or frizzy hair with flaking is the case the Head and Shoulders listing describes. Mamaearth is described for an itchy, flaky scalp with use of no more than twice a week, and Himalaya for a reader who wants tea tree and mint and can accept that no active strength is listed. Dr Batra’s suits a reader who wants thuja and tea tree and does not need a named antifungal strength.
The AAD page adds that a person whose shampoo stops working can alternate between shampoos with different actives.
