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Dexe Instant Black Hair Shampoo is a two-part dye-and-shampoo mix that colors gray and white hair black in about 5 to 10 minutes. You pump the two chambers in a 1:1 ratio, work it through the hair, and rinse. It is ammonia-free but not free of conventional dye chemistry: the formula lists p-phenylenediamine and resorcinol, so patch-test first. It suits people covering scattered grays or doing quick root touch-ups at home, and it costs far less per application than a salon visit. Against box dyes it is faster and easier to apply, but the black is semi-permanent and fades, and the shade is essentially one fixed black rather than a range.
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Lowest price we've seen: $19.99 on Nov 7 at eBay. Tracked across 3 stores since Nov 7.
Ratings are middling at 3.6 out of 5 across more than 900 ratings. Many buyers like the speed and the gray coverage, while others report uneven color, fading and scalp irritation.
Dexe Instant Black Hair Shampoo is a 2-in-1 shampoo and hair dye that cleanses hair while covering gray and white hair. It gives a natural-looking black color and is semi-permanent and ammonia-free. The bottle holds 400 ml (13.53 fl oz).
The formula comes in two parts, A and B, in a dual-pump bottle that dispenses both in a 1:1 ratio. Part A contains herbal extracts, including mulberry, fo-ti root, ganoderma mushroom, angelica, chrysanthemum and honeysuckle. The extracts are meant to nourish and strengthen hair, which is left soft, smooth and shiny.
To use it, start with clean, completely dry hair and put on the protective gloves provided. Press the pump to release Part A and Part B in equal amounts and mix them evenly in your gloved hands. Leave the mixture on for 5 to 10 minutes to cover gray and white hair. For thick or stubborn gray hair, leave it on for 15 to 20 minutes.
