Lather up — but only at the scalp.
“You only need to shampoo the hair at the scalp, particularly at the nape,” Saviano says.
White agrees. “The best way to lather up is from roots to ends. The hair closest to the scalp is the youngest and will inevitably be the oiliest, while the end of the hair is the oldest and usually driest, most fragile part of the hair.”