History:

 This man did not shave his beard for 3 years.He had started applying hair dye on beard and mustache since 1 yr.Since last 1months he observed depigmented area just near the neck.He shaved his beared and was shocked to see such depigmented chin.It is contact leucoderma to PPD in hair dye.Repigmentation started after stopping applying dye and giving a course of oral  and topical steroid.