Background: Post-adolescent acne, which has been increasing in incidence, impacts on the quality of life of patients. However, there has been no evaluation of the skin type of post-adolescent acne in Asian. Objectives: We aimed to evaluate differences between post-adolescent acne skin type and normal skin type using the Baumann Skin Type Indicator in Korean. Methods: Twenty post-adolescent acne patients and thirty normal controls were enrolled in the study. They submitted 64-item questionnaires which were based on the Baumann Skin Type Indicator designed to determine baseline skin type. It defines 16 facial skin types using four dichotomous parameters: dry (D) or oily (O); sensitive (S) or resistant (R); pigmented (P) or non-pigmented (N); and wrinkled (W) or un-wrinkled (tight, T). Results: All post-adolescent acne patients had sensitive skin type (100%). The odds ratio of sensitive skin type was 18.12 (P = 0.05). Acne patients were more associated with the wrinkled skin type (odds ratio of 4.89, P = 0.01) Conclusion: The present study showed that Korean female post-adolescent acne patients were significantly associated with sensitive skin type and wrinkled skin type rather than oily skin type. We suggested that dermatologist should evaluate the skin type of post-adolescent acne patients and recommend appropriate medical skin care, cosmeceuticals, and cosmetics.