Lipogaine sells two shampoos with confusingly similar names: Big 3 and Big 5. The names refer to the number of headline actives in each formulation — three in the older version, five in the updated one — and readers encountering both products at once often spend more time than they should trying to figure out which to buy.

The short answer: for most readers, Big 5 is the correct choice. Big 3 exists for a specific sensitivity-related reason, and if you don’t have that reason, the decision is straightforward.

The full Lipogaine review, with scoring, comparison to Nizoral, and the broader category context, lives at /lipogaine/. This page covers only the Big 3 versus Big 5 question.

What’s in each

Lipogaine Big 3 contains three headline actives: ketoconazole at approximately 0.2%, biotin, and saw palmetto. It uses a sulfate-free cleansing base with standard conditioning agents. The formulation has been on the market since roughly 2010 and remains in the DS Laboratories lineup.

Lipogaine Big 5 contains those same three actives plus two additions: caffeine (evidence-backed for modest hair-shaft thickness improvement in daily-use shampoos) and argan oil / castor-oil-derived conditioners (cosmetic rather than clinical contribution). The formulation is newer and represents DS Labs’s attempt to deliver a more polished user experience on top of the same clinical backbone.

The ketoconazole concentration — the most important active — is the same in both. That is the critical point. Whichever bottle you buy, the headline clinical ingredient is delivered at the same level.

Price and usage

At retail, Big 5 costs roughly $2 to $4 more per bottle than Big 3, for an effective monthly cost difference of under a dollar. This is not a meaningful budget consideration. Both bottles last roughly six to eight weeks at daily-use cadence.

The cosmetic experience of Big 5 is noticeably better than Big 3 for most users — it lathers more pleasantly, scents more naturally, and conditions better. Big 3 is closer to a medicated-shampoo feel.

Who should choose Big 3 over Big 5

The one legitimate reason to choose Big 3 is caffeine sensitivity on the scalp. A small proportion of users — typically those who have reacted to Alpecin or other caffeine-prominent shampoos — develop a mild burning or redness response to the caffeine component in Big 5. For those users, Big 3 is the safer formulation because it removes the reactive ingredient entirely.

If you have no history of reactive scalp and no known issue with caffeine-containing topicals, Big 3 offers no advantage over Big 5. The simpler formulation is not a feature.

Who should choose Big 5

Essentially everyone else. Big 5 delivers the same ketoconazole-led clinical story in a more pleasant user experience, with a modest incremental contribution from caffeine, at a price point that is effectively identical to Big 3. If a reader asked us today, “Big 3 or Big 5,” and had no specific sensitivity history, we would say Big 5 without hesitation.

Neither is the strongest ketoconazole shampoo available

One pattern we want to flag for clarity: the 0.2% ketoconazole in either Lipogaine formulation is lower than the 1% ketoconazole in OTC Nizoral A-D, which is in turn lower than the 2% ketoconazole in prescription-strength Nizoral. Lipogaine’s lower concentration is what allows daily use; Nizoral’s higher concentration requires twice-weekly rotation.

If you want the strongest single-shampoo ketoconazole dose available without a prescription, Nizoral A-D used twice weekly is the answer. If you want the strongest daily-use ketoconazole dose, Lipogaine Big 5 is the answer. The optimal pattern for many readers is using both — Nizoral twice weekly, Lipogaine on the other days — which delivers substantial weekly ketoconazole exposure while keeping the daily experience pleasant.

What this page used to be

This URL used to host a promotional write-up of Big 3 as a standalone product, published in 2017 under our earlier editorial model. We have rewritten it as a short comparison page because Big 3 on its own no longer warrants a dedicated review in 2026 — it has been effectively superseded by Big 5 for most readers, and the readers for whom Big 3 is still the right choice need a comparison framework rather than a standalone sell.

For the substantive evaluation of the Lipogaine line as a whole, see our main Lipogaine shampoo review. For how the product fits into the broader shampoo category, see our flagship roundup.

Last evaluated on April 22, 2026. See our methodology for how we score products.