{"product_id":"cosmtek-dark-brown-hair-dye-shampoo-permanent-ammonia-free-3-in-1-color-for-gray-hair-beard-500ml","title":"COSMTEK Dark Brown Hair Dye Shampoo Permanent — Ammonia-Free 3-in-1 Color for Gray Hair \u0026 Beard (500ml)","description":"\u003ch2\u003eDiscover COSMTEK Dark Brown Hair Dye Shampoo\u003c\/h2\u003e\n\u003cp\u003eA convenient 3-in-1 color depositing shampoo designed for both men and women who want a natural dark brown shade without harsh additives. The formula is gentle, easy to use, and built to fit a modern routine.\u003c\/p\u003e\n\u003ch3\u003eWhat makes it special\u003c\/h3\u003e\n\u003cp\u003eThe formula is free from preservatives, sulfates, and ammonia, delivering a lightweight wash that deposits color while caring for hair. It blends natural herbal ingredients to support a smooth texture and manageable styling without excessive dryness.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePreservatives, sulfates, and ammonia are not used; full formula details are provided for informed use.\u003c\/li\u003e\n  \u003cli\u003eNatural oils and turmeric help reduce frizz and support softness with a gentle touch.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eColor and coverage in minutes\u003c\/h3\u003e\n\u003cp\u003eSuitable for white, gray, or light brown hair, this dye shampoo deposits a rich dark brown tone in about 15 minutes. Apply to wet hair, leave for 15–20 minutes, then rinse for an even, natural look.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEasy steps: wet hair, apply, wait 15–20 minutes, rinse completely.\u003c\/li\u003e\n  \u003cli\u003eDesigned for quick touch-ups between salon visits with a lightweight feel.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDuration and maintenance\u003c\/h3\u003e\n\u003cp\u003eOne use can maintain vibrant color for 4–5 weeks. To keep shade even over time, reapply roughly every 15 days.\u003c\/p\u003e\n\u003cp\u003eSize and finish: 500 ml bottle with an ammonia-free, herbal formula intended for color-treated hair and beards, offering a simple, at-home routine with predictable results.\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 COSMTEK Dark Brown Hair Dye Shampoo last after one application?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Typically 4–5 weeks; for extended wear, reapply about every two weeks.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is the formula ammonia-free and suitable for color-treated hair?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, the formula is ammonia-free and uses natural herbal ingredients; it’s designed for color-treated hair and beards.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"COSMTEK","offers":[{"title":"Default Title","offer_id":63339591663965,"sku":"B0BC1QQWN6","price":34.45,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1037\/4345\/5581\/files\/cosmtek-dark-brown-shampoo-application.jpg?v=1770482477","url":"https:\/\/britishharmonia.co.uk\/products\/cosmtek-dark-brown-hair-dye-shampoo-permanent-ammonia-free-3-in-1-color-for-gray-hair-beard-500ml","provider":"British Harmonia | Natural Makeup \u0026 Fragrance by British Harmonia UK","version":"1.0","type":"link"}