{"product_id":"cosmtek-black-color-depositing-shampoo-for-grey-coverage-400ml-semi-permanent-3-in-1-cleanse-condition","title":"COSMTEK Black Color-Depositing Shampoo for Grey Coverage — 400ml, Semi-Permanent 3-in-1 Cleanse \u0026 Condition","description":"\u003cp\u003e\u003cstrong\u003eCOSMTEK Black Hair Dye Shampoo is a semi-permanent, color-depositing 3-in-1 shampoo that quickly darkens grey or light hair while cleansing, conditioning, and refreshing color in a single 400ml bottle.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis concentrated black hair dye shampoo is designed for people who want an easy at-home way to darken grey, white, or light brown hair without a permanent dye process. The formula deposits pigment while you shampoo, giving gradual to immediate darkening depending on hair porosity and starting shade. It’s intended for routine use to maintain color, reduce visible grey, and add shine with minimal fuss.\u003c\/p\u003e\n\n\u003ch3\u003eHow do I use COSMTEK Colored Shampoo for reliable grey coverage?\u003c\/h3\u003e\n\u003cp\u003eUse the shampoo on dry or towel-dried hair as directed to allow pigment to sit and bond with the hair surface. Leave the product on for 15–20 minutes to achieve the noted depth, then rinse thoroughly; repeat weekly or as needed to build intensity.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eApply to dry or damp hair for best pigment pickup.\u003c\/li\u003e\n  \u003cli\u003eWork evenly from roots to ends for consistent color.\u003c\/li\u003e\n  \u003cli\u003eLeave 15–20 minutes; longer waits may deepen color.\u003c\/li\u003e\n  \u003cli\u003eRinse thoroughly and style as usual.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this shampoo work on my hair color and type?\u003c\/h3\u003e\n\u003cp\u003eThe semi-permanent pigment performs best on grey, white, or light brown hair and can slightly darken already natural or colored hair. Results vary with hair porosity, previous chemical treatments, and natural shade, so expect gradual changes for darker base colors and stronger change on lighter strands.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLight\/porous hair shows faster, fuller coverage.\u003c\/li\u003e\n  \u003cli\u003eDark brown or chemically-treated hair may show subtler change.\u003c\/li\u003e\n  \u003cli\u003eFine and coarse textures both accept pigment; timing affects depth.\u003c\/li\u003e\n  \u003cli\u003ePerform a strand test to preview results before full use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs this product safe and easy to include in my routine?\u003c\/h3\u003e\n\u003cp\u003eThe upgraded formula is made for routine at-home use, simplifying color maintenance by combining cleansing and depositing steps. Always patch-test for allergies, avoid contact with eyes and open wounds, and follow the caution guidance to reduce sensitivity risks.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePatch test before first use to check for reactions.\u003c\/li\u003e\n  \u003cli\u003eAvoid contact with eyes, mouth, and broken skin.\u003c\/li\u003e\n  \u003cli\u003eUse as a replacement for or alongside regular shampoo sessions.\u003c\/li\u003e\n  \u003cli\u003eRinse thoroughly after the recommended processing time.\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\u003eBecause this is a semi-permanent, color-depositing shampoo, the effect is gradual and refreshed with repeated applications rather than permanent. Frequency of use, water hardness, and shampooing habits will influence longevity; maintenance includes periodic reapplications and using color-safe haircare.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eExpect color to fade gradually with regular washing.\u003c\/li\u003e\n  \u003cli\u003eUse color-safe conditioners and cooler water to extend wear.\u003c\/li\u003e\n  \u003cli\u003eReapply weekly or as needed for visible grey coverage.\u003c\/li\u003e\n  \u003cli\u003eStore away from direct heat and sunlight to protect formula.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: COSMTEK Black Hair Dye Shampoo suits anyone seeking a low-commitment method to darken greys, refresh existing black shades, or subtly change lighter hair tones without harsh permanent dyes. It’s a practical choice for busy people, first-time color users who want an easy at-home solution, and those looking to maintain color between salon visits. Always review the ingredient table, perform an allergy patch test, and conduct a small strand test if you have previous chemical treatments to anticipate final 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: Can I use this on previously dyed hair?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, but results vary; perform a strand test as previous color and treatments affect final shade.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How long should I leave the shampoo on for grey coverage?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Leave the shampoo for 15–20 minutes for typical coverage, longer for deeper pigment.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"COSMTEK","offers":[{"title":"Default Title","offer_id":58361765790083,"sku":"B0B4FXC5WZ","price":24.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1023\/2696\/0515\/files\/cosmtek-black-hair-dye-shampoo-front-packaging.jpg?v=1782807482","url":"https:\/\/origin-beauty.com\/products\/cosmtek-black-color-depositing-shampoo-for-grey-coverage-400ml-semi-permanent-3-in-1-cleanse-condition","provider":"Origin Beauty","version":"1.0","type":"link"}