Semi-permanent hair dye is a type of hair dye that is designed to last for a shorter period of time than permanent hair dye. It is typically made with smaller molecules that can penetrate the hair shaft more easily, but it does not contain ammonia or peroxide, which means it does not cause as much damage to the hair. Semi-permanent hair dye can be used to achieve a wide range of colors, and it is often used to create highlights or lowlights.
There are a few different ways to remove semi-permanent hair dye. One method is to use a clarifying shampoo. Clarifying shampoos are designed to remove buildup from the hair, and they can be effective at removing semi-permanent hair dye. Another method is to use a color remover. Color removers are specifically designed to remove hair dye, and they can be effective at removing semi-permanent hair dye. However, color removers can also be harsh on the hair, so it is important to follow the instructions carefully.