COSMTEK Dark Brown Hair Dye Shampoo 17.6 fl oz — 3-in-1 color, conditioner & cleanser for gray coverage

COSMTEK Dark Brown Hair Dye Shampoo is a 3-in-1 semi-permanent color shampoo that covers gray hair and refreshes dark brown tones in 15–20 minutes.

This product combines coloring, conditioning, and cleansing into one easy at-home treatment. Formulated with botanical actives and a conditioning complex, the 17.6 fl oz bottle is designed to deposit dark brown pigment while smoothing hair fibers for a natural-looking finish. It works without bowls or brushes: simply apply, massage, wait, and rinse for faster color touch-ups between permanent treatments.

How quickly will I see color and how long does it last?

You should notice visible darkening of gray hairs after a single 15–20 minute application. Because it is semi-permanent, color gradually fades with shampooing and typically lasts about two to three weeks depending on hair porosity, water, and styling routine.

• Processing time: 15–20 minutes per use
• Typical longevity: approximately 2–3 weeks
• Fade factors: frequent washing, clarifying shampoos, and hard water

Is it easy to use at home and what comes with the bottle?

The shampoo is formulated for simple, DIY application — no mixing required. Put on the included disposable gloves, apply directly to dry or damp hair, massage to distribute pigment evenly, then rinse thoroughly; the process is designed to save salon time and cost.

• No brush or bowl needed — use the bottle directly
• Disposable gloves included for tidy application
• Suits one-person use for quick touch-ups

Will it damage my hair and what hair types work best?

COSMTEK blends color actives with a conditioning compound intended to protect and smooth hair fibers during the coloring process. It’s formulated for a wide range of hair types — from fine to thick, straight to curly — but always perform a patch test before full use to check for sensitivity.

• Contains botanical actives plus conditioning agents
• Suitable for fine, medium, and coarse textures
• Recommended: skin sensitivity test before first application

How well does it cover gray hair and what shade should I expect?

The shampoo is designed to deliver full coverage for gray strands, restoring an even dark brown tone across the hair. Results aim for a natural-looking dark brown rather than a permanent dye level, making it ideal for concealing grays between permanent color services.

• Target outcome: consistent dark brown coverage
• Best for blending and concealing gray hairs
• Non-permanent—color will gradually wash out

Who this product is for: COSMTEK Dark Brown Hair Dye Shampoo suits anyone seeking a fast, at-home solution to conceal gray hair while adding conditioning benefits. It’s aimed at people who prefer an easy, brush-free application, need quick color refreshes between salon appointments, or want a temporary alternative to permanent dyes. If you have sensitive skin, plan a patch test before use and follow all instructions for best results.