Age 29, Height 185 cms, weight 86 kgs, no medical history. Current problem, Lichen planus pigmentation in penis head. Problem of lichen planus is no longer there, but the pigmentation are an emotional stress. Current medication, hydroquinone. Previously applied corticosteriods, but were later on withdrawn as the problem solved. Pigmentations not going though after 12 months. What can be done?