What should I do if my scalp reacts with itching or redness after using this shampoo?

Although this shampoo is formulated without sulphates, sodium chloride, and common harsh foaming agents, any cosmetic product can cause a reaction in someone with a specific ingredient sensitivity. The most common triggers in natural-origin shampoos are essential oils, plant extracts, or preservative systems — even at low concentrations. If you experience itching, burning, redness, or small bumps on the scalp, neck, or behind the ears, discontinue use immediately and rinse the area with plenty of lukewarm water. Avoid scratching, which can worsen inflammation and introduce infection. Do not apply other hair products (styling, oils, treatments) to the irritated area until it has fully calmed down, typically 2–5 days. If symptoms persist beyond 48 hours, spread beyond the contact area, or include swelling, consult a dermatologist or pharmacist; they can help identify whether it is contact dermatitis, an allergic reaction, or a coincidental flare of a condition like seborrheic dermatitis. For future purchases, keep a note of the INCI list (on the bottle) so a specialist can cross-reference potential allergens. A patch test behind the ear before full scalp application is a prudent habit with any new hair product, especially if you have a history of cosmetic sensitivity.