If an allergic reaction or irritation occurs, do not use the product. If no reaction occurs, you're less likely to experience irritation. It may be more difficult to color pubic hair since it tends to be darker, thicker, and coarser than the hair on the head. Gels and cr mes, including products used for men's beards and moustaches, may work better for thicker hair. They are less likely to drip and may provide better control in the genital area.
Lighter hair is generally easier to dye.
In addition, black tends to work better than other colors. Depending on natural hair color and desired outcome, the hair pigment may need to be removed and go through two or three steps to reach the preferred color. Snipping a few pubic hairs and performing a strand test can help you gauge the amount of time it will take to achieve the right shade. Directions are often found in the product's packaging. Never exceed the amount of time mentioned in the instructions - it's also better to stop the lightening process after some, but not all, of the color has been lifted.