The formula to calculate the Desired Amount of Dye (D) is:
\[ D = \frac{V}{R_d} \times R_h \]
Where:
A hair dye ratio refers to the proportion of hair dye to developer that should be mixed together to achieve the desired hair color. The ratio is typically specified by the manufacturer and can vary depending on the type of dye and the desired intensity of the color. Common ratios include 1:1, 1:1.5, and 1:2, where the first number represents the amount of dye and the second number represents the amount of developer. Mixing the correct ratio is crucial for achieving consistent and predictable results.
Let's assume the following values:
Using the formula to calculate the Desired Amount of Dye:
\[ D = \frac{60}{2} \times 1 = 30 \text{ mL} \]
The Desired Amount of Dye is 30 mL.
