Ghost of Tsushima's black dye can give players one of the most severe looks available in the game, bestowing a monochromatic look that contributes to the Monochrome Masters Trophy. The catch? It can only be purchased from a single, hidden merchant. Here's where you can find that merchant.
Ghost of Tsushima Black Dye: Where to Find Black Dye Merchant
Whereas the white dye merchant can be found as soon as players reach the opening of Act 1 and gain access to the game's open world, the black dye merchant remains gated off until they hit Act 2 of the main story. Even reaching Act 2 won't make it easy to find the merchant without external aid, as the game makes no in-game indication of where to find him.
To reach the black dye merchant, you'll have to head north from Yarikawa Stronghold and just east of Kawamata Village, on the east side of the island. There you'll find a cave, and inside the cave awaits the black dye merchant.