Step 5 - Preliminary Highlights
Select the dodge tool and select "Natural Brushes > Charcoal 14 pixel" as used in the smudging previously. Set the range to midtones and the exposure to 50.
On both hair layers, make single strokes along the length of the hair in the direction in which the hair would grow. You want to make multiple long strokes side-by-side until the entirity of the hair is covered.