Colourists and stylists who apply tint, bleach, or other liquid formulas by squeeze bottle rather than brush, plus home colourists doing root touch-ups who want a reusable, markable bottle instead of a box-dye applicator.

What makes this bottle useful over pouring colour into a bowl and using a brush is precision and control: the volume markings let a colourist measure an exact ratio of tint to developer before mixing, and the narrow Yorker spout lets that mixed formula be directed along a specific section, like a part line, without brushing it on. That's part of why it's a common tool for root touch-ups and scalp bleach application specifically, where controlled placement matters more than broad coverage.

Remove the cap and measure colour and developer into the bottle using the printed oz and mL markings on the side, then snap the cap back on and shake to mix. Squeeze gently while running the tip along the section of hair or scalp being treated, controlling flow with hand pressure. After use, remove the cap and rinse the bottle and spout thoroughly with warm water before any product residue dries.

Pro: the oz and mL markings let you measure colour and developer by volume for a consistent mix ratio each time, which matters for repeatable formulas. Pro: the Yorker spout gives more control over how much product comes out than a wide-mouth bottle would, useful for root application. Con: it's a manual squeeze bottle, so flow rate depends entirely on hand pressure, not a fixed dosage. Con: as with any reusable applicator bottle, leftover colour residue in the spout or cap threads can be hard to fully rinse out if it isn't cleaned right after use.