{"product_id":"cosmtek-black-dye-shampoo-ammonia-free-3-in-1-color-for-gray-coverage-500ml","title":"COSMTEK Black Dye Shampoo – Ammonia-Free 3-in-1 Color for Gray Coverage (500ml)","description":"\u003ch2\u003eRefresh, color, and care in one step\u003c\/h2\u003e\n\u003cp\u003eMeet COSMTEK Black Dye Shampoo, a color-depositing shampoo crafted for both men and women who want a quick, at‑home way to refresh a natural black shade. Packaged in a generous 500 ml bottle, this formula is ammonia-free and designed to be gentle on hair and scalp while delivering a visibly cooler, deeper tone. The label’s 30‑day framing hints at regular maintenance, though the exact duration depends on washing frequency and hair type.\u003c\/p\u003e\n\n\u003ch3\u003eSafe, thoughtful formula\u003c\/h3\u003e\n\u003cp\u003eThe product features a formula upgrade that eliminates preservatives, sulfates, and ammonia. This approach aims to deliver cleansing with color deposition while keeping routine use comfortable. For transparency, you can review the full formula table to understand the ingredients behind the bottle you reach for.\u003c\/p\u003e\n\n\u003ch3\u003eSmooth, frizz-free results\u003c\/h3\u003e\n\u003cp\u003eKey components—Argan Oil, Olive Oil, and Turmeric—work together to smooth the hair surface and help reduce frizz after washing. Expect a softer feel and a natural-looking gloss that catches light without appearing artificial.\u003c\/p\u003e\n\n\u003ch3\u003eOne product, many uses\u003c\/h3\u003e\n\u003cp\u003eThis versatile option works on white, gray, or light brown hair to deepen the shade, and it can also darken beard color for a cohesive look across hair and facial hair.\u003c\/p\u003e\n\n\u003ch3\u003eSimple, quick routine\u003c\/h3\u003e\n\u003cp\u003eApply to wet hair as you would a regular shampoo, leave on for 5–10 minutes, then rinse completely. The process is straightforward, making it suitable for busy mornings or relaxed weekend grooming.\u003c\/p\u003e\n\n\u003ch3\u003eConsistency that lasts\u003c\/h3\u003e\n\u003cp\u003eA single use can help maintain the color for about 4–5 weeks. For longer-lasting depth and shine, reapply roughly every 15 days, adjusting to your washing schedule and preferred shade.\u003c\/p\u003e\n\n\u003ch3\u003eWhy choose COSMTEK\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eAmmonia-free, sulfates-free, and preservative-free formula for gentler color refresh\u003c\/li\u003e\n  \u003cli\u003eNatural herbal composition supports a calmer scalp and smoother hair surface\u003c\/li\u003e\n  \u003cli\u003eThree-in-one concept combines color deposition with everyday cleansing\u003c\/li\u003e\n  \u003cli\u003eLarge 500 ml bottle offers weeks of at‑home color maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat to expect in daily use\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eColor deposition without harsh chemicals for a natural-looking shade\u003c\/li\u003e\n  \u003cli\u003eFrizz control thanks to nourishing oils and turmeric\u003c\/li\u003e\n  \u003cli\u003eBeard darkening option for a harmonious look\u003c\/li\u003e\n  \u003cli\u003eEasy, no-fuss routine compatible with busy days\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eReal-life scenarios\u003c\/h3\u003e\n\u003cp\u003eIdeal for anyone seeking gray coverage without a salon visit, or for those who want a consistent, dark shade that remains soft to the touch. It’s also a practical choice for refreshing color between appointments, with the potential to enhance shine and depth over time.\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 COSMTEK Black Dye Shampoo safe for color-treated hair?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It’s free from ammonia, sulfates, and preservatives, designed to be gentler on color-treated hair.\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 with regular use?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: One application can last about 4–5 weeks; reapply every ~15 days for maintained darkness.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"COSMTEK","offers":[{"title":"Default Title","offer_id":56233867379020,"sku":"B0BC1SPT9V","price":32.27,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1005\/5912\/6860\/files\/cosmtek-black-dye-shampoo-bottle-pour.jpg?v=1765730065","url":"https:\/\/belvera.co.uk\/products\/cosmtek-black-dye-shampoo-ammonia-free-3-in-1-color-for-gray-coverage-500ml","provider":"Belvera | British Beauty, Skin Care \u0026 Personal Wellness","version":"1.0","type":"link"}