{"product_id":"cosmtek-instant-hair-color-shampoo-chestnut-brown-3-in-1-herbal-color-500ml","title":"COSMTEK Instant Hair Color Shampoo Chestnut Brown – 3-in-1 Herbal Color, 500ml","description":"\u003ch2\u003e COSMTEK Chestnut Brown Instant Hair Color Shampoo — a colour refresh you can do at home \u003c\/h2\u003e\n\u003cp\u003e COSMTEK’s Chestnut Brown Instant Hair Color Shampoo offers a convenient, at‑home way to refresh your look in minutes. This 3‑in‑1 formula works as a cleansing shampoo, a temporary color, and a nourishing treatment for the outer hair shaft. It’s designed to sit on the exterior of the hair cuticle, helping to minimize routine stress while delivering a visible shade shift. A skin patch test is recommended before first use to help you gauge sensitivity and compatibility with your skin. \u003c\/p\u003e\n\u003cp\u003e In a typical routine, you can expect a lightweight wash that deposits chestnut brown pigment, resulting in a natural-looking hue that can last for several weeks. If you’re after a deeper brown, you can extend the time a little longer beyond the standard 15–20 minutes. The product is marketed for 3–4 weeks of wear, with color fading gradually as you wash and go about daily activities. \u003c\/p\u003e\n\u003ch3\u003e Key benefits and what to expect \u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e Quick, user-friendly application — no bowl, no brush required; simply wear gloves and apply like a shampoo. \u003c\/li\u003e\n  \u003cli\u003e 3‑in‑1 formula — cleanses, colors, and nourishes the hair using a mild herbal blend. \u003c\/li\u003e\n  \u003cli\u003e Herbal ingredients include Polygonum multiflorum and ginseng extract to support hair texture and softness. \u003c\/li\u003e\n  \u003cli\u003e Time-saving alternative to frequent salon visits — color results at home in a fraction of the time. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e How to use and color guidance \u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e Always perform a skin test before first use. Apply a small amount behind the ear or inner forearm and wait 24 hours. \u003c\/li\u003e\n  \u003cli\u003e Apply to dry or towel-dried hair, wear gloves, and massage like a regular shampoo for even distribution. \u003c\/li\u003e\n  \u003cli\u003e For a deeper shade, leave on a few minutes longer during the waiting period, then rinse thoroughly. \u003c\/li\u003e\n  \u003cli\u003e The Chestnut Brown shade is not designed to cover gray completely. If full gray coverage is desired, black or dark brown may be more suitable. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e What you should know about safety and results \u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e The product adheres to the exterior of the hair shaft, which can reduce heavy processing and potential scalp irritation. \u003c\/li\u003e\n  \u003cli\u003e The formula emphasizes a gentle approach with natural herbal ingredients, crafted to help color refresh without aggressive chemicals. \u003c\/li\u003e\n  \u003cli\u003e If you receive a color that doesn’t meet your expectations, contact customer service for assistance within 12 hours. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e Why you might choose this 500ml bottle\u003c\/h3\u003e\n\u003cp\u003e A single bottle provides a practical quantity for routine touch‑ups, making it easy to refresh color between salon visits and maintain a consistent Chestnut Brown tone. The combination of speedy application, herbal ingredients, and shade versatility can appeal to both daily wearers and those aiming for occasional color upkeep. \u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How long does the Chestnut Brown color last with COSMTEK Instant Hair Color Shampoo?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Typically 3–4 weeks on the outer hair shaft, depending on washing frequency and hair type.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can Chestnut Brown fully cover gray hair?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Chestnut Brown is not designed for full gray coverage; black or dark brown shade is recommended for gray.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Belvera | British Beauty, Skin Care \u0026 Personal Wellness","offers":[{"title":"Default Title","offer_id":56245742567756,"sku":"B0B426WW5Y","price":31.24,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1005\/5912\/6860\/files\/cosmtek-instant-hair-color-shampoo-chestnut-brown-bottle.jpg?v=1765825179","url":"https:\/\/belvera.co.uk\/products\/cosmtek-instant-hair-color-shampoo-chestnut-brown-3-in-1-herbal-color-500ml","provider":"Belvera | British Beauty, Skin Care \u0026 Personal Wellness","version":"1.0","type":"link"}