{"product_id":"cosmtek-black-hair-dye-shampoo-3-in-1-semi-permanent-color-no-ammonia-100-grey-coverage-16-9-oz","title":"COSMTEK Black Hair Dye Shampoo — 3-in-1 Semi-Permanent Color, No Ammonia, 100% Grey Coverage (16.9 oz)","description":"\u003ch2\u003eCosmtek Black Hair Dye Shampoo: 3-in-1 color, cleanse, and conditioning\u003c\/h2\u003e\n\u003cp\u003eDiscover an at‑home coloring solution designed for ease and everyday care. COSMTEK Black Hair Dye Shampoo combines semi-permanent color with cleansing and conditioning in a single step. The rich black shade is delivered through a herbal, ammonia-free formula that aims to blend grays while leaving hair feeling soft and manageable. The product’s unique conditioning compound works from the inside out, helping to protect the hair fibers as color develops, so you can refresh your look with less fuss and more confidence.\u003c\/p\u003e\n\u003cp\u003eAs you use it, you may notice a creamy lather and a mild, refreshing herbal scent. The lightweight formula is designed to be gentle on the scalp, avoiding harsh substances while still delivering a noticeable color shift. This makes it suitable for a variety of hair types and textures, from thick to fine, straight to curly, and everything in between. While results vary by person, many users experience a rejuvenated appearance and a more uniform hair tone with regular use.\u003c\/p\u003e\n\u003ch3\u003eWhy choose a 3‑in‑1 approach\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eColor, cleanse, and condition in one simple step for busy days\u003c\/li\u003e\n  \u003cli\u003eNo ammonia and no parabens, offering a gentler alternative to traditional dyes\u003c\/li\u003e\n  \u003cli\u003eDesigned for quick at-home application without extra tools\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eColor longevity and gray coverage\u003c\/h3\u003e\n\u003cp\u003eThe semi-permanent color is formulated to maintain a dark black shade for about 2 to 3 weeks, with the exact duration depending on washing frequency and hair growth. It is designed to effectively cover gray hair and help restore a refreshed appearance, while remaining suitable for all common hair textures, including straight, curly, thick, and fine.\u003c\/p\u003e\n\u003ch3\u003eHow to use\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eWear the provided gloves and apply the shampoo evenly through damp hair and scalp\u003c\/li\u003e\n  \u003cli\u003eMassage gently for 15–20 minutes to ensure full coverage\u003c\/li\u003e\n  \u003cli\u003eRinse thoroughly and style as usual to reveal the new shade\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eImportant safety note: perform a skin patch test before first use to check for sensitivity. This herbal formula is designed to minimize harsh ingredients while delivering color and conditioning benefits, so you can try it with peace of mind.\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: Is this product suitable for all hair types?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: COSMTEK Hair Dye Shampoo works on all hair types, including straight, curly, thick, and fine.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How long does the color last?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: COSMTEK color typically lasts about 2–3 weeks, varying with washing frequency and scalp biology.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"COSMTEK","offers":[{"title":"Default Title","offer_id":56234038362444,"sku":"B0B41X3RDF","price":31.24,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1005\/5912\/6860\/files\/cosmtek-black-hair-dye-shampoo-packaging_jpg.jpg?v=1765733494","url":"https:\/\/belvera.co.uk\/products\/cosmtek-black-hair-dye-shampoo-3-in-1-semi-permanent-color-no-ammonia-100-grey-coverage-16-9-oz","provider":"Belvera | British Beauty, Skin Care \u0026 Personal Wellness","version":"1.0","type":"link"}