Deciphering the Subtypes of Oily Sensitive Skin in Chinese Women: A Comprehensive Classification and Analysis

Abstract

Background Oily sensitive skin is complex that requires accurate identification and personalized care. However, the current classification method relies on subjective assessment. Objectives This study aimed to create a skin type and subtype classification using objective biophysical parameters to investigate differences in skin characteristics across anatomical and morphological regions. Methods This study involved 200 Chinese women. Noninvasive capture of biophysical measures and image analysis yielded 104 parameters. Key classification parameters were identified through mechanisms and characteristics, with thresholds set using statistical methods. Results This study identified the optimal ternary value classification method for dividing skin types into dry, neutral, and oily types based on tertiles of biophysical parameters, and further into barrier-sensitive, neurosensitive, and inflammatory-sensitive types. Oily sensitive skin showed increased sebum, pore, redness, dullness, wrinkles, and porphyrins, along with a tendency for oiliness and early acne. Subtypes exhibited specific characteristics: barrier-sensitive was rough with a high pH and was prone to acne; neurosensitive had increased TEWL and sensitivity; and inflammatory-sensitive exhibited a darker tone, with low elasticity and uneven redness. Conclusions This study established an objective classification system for skin types and subtypes using noninvasive parameters, clarifying the need for care for oily sensitive skin and supporting personalized skincare.