What's the best shampoo for greasy hair?

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Overall

ChatGPT

Gemini

Claude

Grok

Choosing a routine for greasy hair

The UK answers focus on scalp cleansing, budget choices and occasional removal of product build-up. Their picks also distinguish oily roots with dry ends from a flaky or itchy scalp.

Start with your regular cleansing needs

Scalp Advanced appears in the top two of all four UK responses. ChatGPT and Grok highlight MONDAY Clarify as a budget choice. These are the supplied lists’ preferences, rather than a claim that one shampoo suits everyone.

Make room for an occasional reset

Gemini, Claude and Grok recommend OUAI Detox; Claude also picks Bumble and bumble Sunday for build-up. The UK responses link deeper cleansing to styling products and dry shampoo. Use these products according to their labels.

Look after the lengths as well

Gemini highlights Elvive Hydra Pure and Grok selects Kérastase Bain Divalent for oily roots with dry ends. The UK tips keep shampoo focused on the scalp and conditioner on the lengths, rather than adding heavy products at the roots.

Flakes or itch change the shortlist

Claude ranks Vichy Dercos first for oily, dandruff-prone hair; Gemini includes Philip Kingsley Flaky/Itchy Scalp. These UK responses treat flaking as a separate concern from oiliness alone, so the highest overall score is not the only consideration.

Based on the supplied UK responses: advice sources and interpretation. Follow each product’s directions and adjust to your hair’s needs.