2. To begin application, hold the hair down with one hand to avoid hair getting caught in the brush. Using the Expert Accents Brush, apply the lightening mixture in a 1–2 cm broad line, starting from the roots of the parting and going downward. Apply the lightener until approximately 1 cm from the hairline. Apply as evenly as possible, including in the less visible areas near the back of the head. Try to keep at least one hand clean, to avoid unwanted lighter patches when folding the hair over to the next section. After undoing the plastic clip holding the top part of the hair, separate a new strand.