{"product_id":"cosmpro-black-hair-dye-shampoo-3-in-1-dark-brown-black-semi-permanent-gray-coverage-in-15-20-min","title":"cosmpro Black Hair Dye Shampoo 3-in-1, Dark Brown\/Black — Semi-Permanent Gray Coverage in 15–20 min","description":"\u003cp\u003e\u003cstrong\u003ecosmpro Black Hair Dye Shampoo is a 3-in-1 semi-permanent color shampoo that covers gray hair and cleanses and conditions in a single 15–20 minute at-home treatment.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf you want a quick, low-commitment way to darken grays without a salon appointment, this product combines hair dye, shampoo and conditioner into one bottle. The formula deposits color on the hair surface for natural-looking black or dark brown tones that typically last about 3–4 weeks. Because the dye coats the hair cuticle rather than deeply penetrating it, this method is gentler than many permanent dyes — though a patch test is recommended before first use.\u003c\/p\u003e\n\n\u003ch3\u003eHow do I use this shampoo to cover gray hair?\u003c\/h3\u003e\n\u003cp\u003eApplication mirrors your normal shampoo routine with a few timing adjustments. Wear gloves, lather the product into wet hair, allow it to sit for 15–20 minutes depending on how complete you want the coverage, then rinse thoroughly.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUse on wet hair; apply as you would regular shampoo.\u003c\/li\u003e\n  \u003cli\u003eLeave for 15 minutes for partial coverage, 20 minutes for fuller gray coverage.\u003c\/li\u003e\n  \u003cli\u003eRinse until water runs clear and style as usual.\u003c\/li\u003e\n  \u003cli\u003ePerform a skin patch test at least 48 hours before full use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat kind of color result and longevity can I expect?\u003c\/h3\u003e\n\u003cp\u003eYou’ll get a natural dark brown to black shade that sits on the hair’s outer layer, producing even coverage for most gray patterns. Results generally hold for about three to four weeks, gradually fading with regular washing and chemical exposure.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eShade: dark brown to black finish depending on starting color.\u003c\/li\u003e\n  \u003cli\u003eDuration: typically 3–4 weeks before noticeable fading.\u003c\/li\u003e\n  \u003cli\u003eFade pattern: gradual washout from the surface, not root regrowth like permanent dye.\u003c\/li\u003e\n  \u003cli\u003eReapplication: repeat whenever color starts to fade or as desired.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs this safe for my hair and skin, and what precautions should I take?\u003c\/h3\u003e\n\u003cp\u003eThe formula is designed to sit on the hair surface, which reduces deep chemical penetration compared with permanent dyes, but sensitivity is still possible. Always perform an allergy patch test and avoid contact with eyes, mouth and broken skin. If irritation occurs, stop use and rinse thoroughly.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSkin test recommended before first application.\u003c\/li\u003e\n  \u003cli\u003eAvoid contact with eyes; rinse immediately if contact occurs.\u003c\/li\u003e\n  \u003cli\u003eNot for use on damaged or wounded scalp areas.\u003c\/li\u003e\n  \u003cli\u003eUse gloves during application to avoid staining hands.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this product save time and money versus salon visits?\u003c\/h3\u003e\n\u003cp\u003ecosmpro’s 3-in-1 shampoo removes the need for separate dye, conditioner and salon appointments by providing color, cleansing and conditioning in one step. That makes touch-ups and routine use faster and more affordable while letting you manage color at home on your schedule.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNo bowl, brush, or salon booking required.\u003c\/li\u003e\n  \u003cli\u003eSingle-step application reduces process time to under 30 minutes.\u003c\/li\u003e\n  \u003cli\u003eCost-effective for regular touch-ups and quick gray coverage.\u003c\/li\u003e\n  \u003cli\u003eCompact and travel-friendly for on-the-go use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? cosmpro Black Hair Dye Shampoo is ideal for men and women seeking a fast, gentle way to cover grays and refresh dark hair without long-term commitment. It suits people who prefer at-home solutions, those who want to minimize processing time, and anyone looking to extend time between salon coloring services. If you have a sensitive scalp or known dye allergies, follow the included patch-test guidance and consult a professional if unsure.\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 cosmpro dye shampoo on for gray coverage?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Leave for 15 minutes for light coverage and 20 minutes for fuller gray coverage; then rinse until water runs clear.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How long does the black color last?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Color typically lasts about 3–4 weeks, gradually fading with regular washes and exposure to chemicals or UV.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"cosmpro","offers":[{"title":"Default Title","offer_id":53431289708891,"sku":"B0BJDJ17VB","price":35.06,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1017\/9860\/9243\/files\/cosmpro-front-bottle.jpg?v=1782266425","url":"https:\/\/remediesbeauty.co.uk\/products\/cosmpro-black-hair-dye-shampoo-3-in-1-dark-brown-black-semi-permanent-gray-coverage-in-15-20-min","provider":"REMEDIESBEAUTY","version":"1.0","type":"link"}