{"product_id":"cosmtek-black-color-depositing-shampoo-400ml-semi-permanent-3-in-1-grey-coverage-tone-refresh","title":"COSMTEK Black Color-Depositing Shampoo 400ml — Semi-Permanent 3-in-1 Grey Coverage \u0026 Tone Refresh","description":"\u003cp\u003e\u003cstrong\u003eCOSMTEK Black Hair Dye Shampoo is a 3-in-1 semi-permanent colored shampoo that deposits black pigment, evens out gray, and refreshes tone in one easy application.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis color-depositing shampoo combines gentle cleansing with pigment delivery so you can refresh or change your hair color at home without peroxide or permanent dyes. The upgraded formula includes a full ingredients table for transparency and is designed to work on a range of natural shades—from white and gray to light brown—making it a practical option for both women and men seeking temporary black coverage and tone maintenance.\u003c\/p\u003e\n\n\u003ch3\u003eHow do I use this shampoo to get even black coverage?\u003c\/h3\u003e\n\u003cp\u003eUse COSMTEK Black Hair Dye Shampoo on dry hair like a standard shampoo, leave the product in for 15–20 minutes to allow the pigment to deposit, then rinse thoroughly. For the most consistent results, apply evenly from roots to ends and use gloves or a tint brush to target stubborn gray areas.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eApply to dry hair for stronger color payoff.\u003c\/li\u003e\n  \u003cli\u003eLeave 15–20 minutes; adjust time for intensity.\u003c\/li\u003e\n  \u003cli\u003eRinse well, repeat weekly for upkeep if needed.\u003c\/li\u003e\n  \u003cli\u003ePatch-test prior to full application to check sensitivity.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this shampoo work on different hair colors and textures?\u003c\/h3\u003e\n\u003cp\u003eThe semi-permanent formula is formulated to deposit black pigment on a variety of base shades and hair types, though final results vary with original color, porosity, and previous treatments. Darker natural bases will show subtler change while lighter or gray hair displays more obvious black coverage.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eWhite and gray hair tend to accept pigment more visibly.\u003c\/li\u003e\n  \u003cli\u003eLight brown hair will darken toward black tone with repeated use.\u003c\/li\u003e\n  \u003cli\u003ePorous or chemically-treated hair may take color faster.\u003c\/li\u003e\n  \u003cli\u003eResults are temporary and gradually fade with washing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs the product safe and what precautions should I take?\u003c\/h3\u003e\n\u003cp\u003eCOSMTEK provides an ingredient table and recommends an allergy (patch) test before first use to reduce the risk of irritation. Avoid contact with eyes, mouth, nose and any broken skin; if contact occurs, rinse immediately and discontinue use if irritation develops.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePerform a patch test 48 hours before use.\u003c\/li\u003e\n  \u003cli\u003eAvoid applying to open wounds or irritated scalp areas.\u003c\/li\u003e\n  \u003cli\u003eKeep out of eyes; rinse thoroughly if accidental contact occurs.\u003c\/li\u003e\n  \u003cli\u003eStore in a cool, dry place away from direct sunlight.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow long does the color last and how do I maintain it?\u003c\/h3\u003e\n\u003cp\u003eThe semi-permanent dye fades gradually over multiple washes; frequency of shampooing, water temperature, and hair condition affect longevity. To maintain depth, reapply the color-depositing shampoo every 1–2 weeks or as needed, and use color-safe conditioners to prolong pigment retention.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eColor fades with repeated washing and heat styling.\u003c\/li\u003e\n  \u003cli\u003eCold or lukewarm water helps preserve pigment longer.\u003c\/li\u003e\n  \u003cli\u003eUse sulfate-free, color-safe products for upkeep.\u003c\/li\u003e\n  \u003cli\u003eTouch up roots or gray spots selectively between full applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: COSMTEK Black Hair Dye Shampoo is intended for adult men and women who want an easy, non-permanent way to darken hair, cover gray strands, or refresh black tones without salon chemicals. It's suited to those seeking a low-commitment color option, users who prefer to maintain color at home, and anyone looking for a multipurpose product that cleanses and deposits color at the same 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: How long should I leave COSMTEK Black Hair Dye Shampoo in?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Leave it on dry hair for 15–20 minutes, then rinse; extend a few minutes for deeper tone if needed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this shampoo on chemically treated hair?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, but results may vary; do a strand test first and avoid use on irritated or damaged scalp.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"COSMTEK","offers":[{"title":"Default Title","offer_id":67549006889130,"sku":"B0B4FXC5WZ","price":56.87,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/8989\/6874\/files\/cosmtek-black-shampoo-front-packaging.jpg?v=1790813039","url":"https:\/\/opulora.ca\/products\/cosmtek-black-color-depositing-shampoo-400ml-semi-permanent-3-in-1-grey-coverage-tone-refresh","provider":"OPULORA","version":"1.0","type":"link"}