This chapter seeks to familiarize the reader with lichen planopilaris (LPP). LPP is the commonest cause of cicatricial alopecia where the hair loss is associated with scalp itching. More active the disease, more severe is the itching. Multiple irregular areas of scarring alopecia associated with scalp itching, perifollicular erythema and sometimes papules around the emergence of hair shafts are the important signs of LPP. Key trichoscopic features of LPP are listed in this chapter. There are 14 clinical images are also provided in this chapter.