Symptom guide

Itchy Scalp After Shampooing: What Might Be Causing It

If your scalp itches, tingles or flakes after washing, your shampoo is a prime suspect. Here's how to work out which ingredient.

What could be going on

An itchy scalp soon after washing points at the shampoo or conditioner. The usual suspects are fragrance, the preservative methylisothiazolinone (MI), and strong sulphates (SLS) that strip the scalp. A flaky, greasy itch may instead be seborrhoeic dermatitis, which needs an antifungal shampoo.

How to narrow it down

When to see a doctor

If the scalp is sore, bleeding, very flaky or not improving with gentler products, see a GP, pharmacist or dermatologist, who can tell irritation from conditions like seborrhoeic dermatitis or psoriasis.

Reading a label by eye, or using a free ingredient-checker, will tell you what is in a product. What it will not do is check it against the specific ingredients you react to.

To close that gap, a personal-list app like ClearaScan lets you save the ingredients you react to once and scan any product to flag only your triggers. It also keeps a Reaction Journal for flare-ups, a shared Care Circle so family or carers can scan for you, and a Trusted Products list for items you have cleared, and it is currently in early access. (Disclosure: our editor co-founded ClearaScan, and we are not paid to mention the others.)

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When the balm meant to soothe your lips makes them worse, an ingredient is usually to blame. Here's what to suspect and what to try instead.

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Rash Under Jewellery, Watches or Fasteners? Suspect Nickel

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A note on this content. The Sensitive Skin Lab publishes general educational information, not medical advice. If you suspect you have an allergy or sensitivity, consult a qualified dermatologist or allergist. Product formulations and labels change without notice, so always check the ingredients on the product itself.