How Much Developer Do I Mix With Hair Dye? Ratios That Work
The amount of developer to mix with hair dye is usually equal parts, a 1:1 ratio, or twice as much developer, a 1:2 ratio. The correct formula belongs to the specific color line, so check the manufacturer’s instructions before measuring. For example, 60 g of dye requires 60 g of developer at 1:1, or 120 […]