The Beauty Health Index (BHI): A Proposed Framework for Quantifying Facial Aesthetic Health

Facial aesthetic health is one of the most visible indicators of well-being, yet unlike cardiovascular fitness, metabolic status, or sleep quality, it lacks a standardized measurement method. Existing approaches evaluate isolated elements such as wrinkles, pigmentation, symmetry, or contour, although appearance is shaped jointly by structural anatomy, skin physiology, expression patterns, regenerative capacity, and lifestyle behaviors. No current framework integrates these components into a single interpretable score. This gap limits clinical practice: dermatologists rely on subjective grading scales, surgeons assess proportion in isolation, and consumer applications offer non-validated "beauty scores." The Beauty Health Index (BHI) is proposed as a multidomain framework for the standardized assessment and longitudinal tracking of facial aesthetic health. To develop and present a multidomain framework for the structured assessment of facial aesthetic health by integrating biologically relevant determinants into a single composite index. A structured review of literature in aesthetic surgery, dermatology, psychophysiology, regenerative biology, and lifestyle medicine informed the identification of five core domains: morphologic harmony, skin quality, expression dynamics, regenerative performance, and lifestyle influence, encompassing multiple evidence-based factors. Domain weighting was guided by literature-informed appraisal and iterative refinement to ensure balanced representation of intrinsic, extrinsic, and behavioral contributors. The BHI framework integrates 40 evidence-based subsystems across five domains into a composite score intended to reflect global facial aesthetic health. Theoretical modeling suggests proportional domain contributions and mathematically stable behavior across simulated parameter ranges, without dominance of any single subsystem. The BHI introduces a novel framework for the integrated assessment of facial aesthetic health. By combining morphologic characteristics, skin quality, expression dynamics, regenerative biology, and lifestyle factors into a unified structure, it is designed to support longitudinal evaluation, personalized planning, and structured assessment of treatment- and product-related changes. The BHI is proposed as an initial framework grounded in existing evidence, and further studies are required to evaluate its reliability, validity, and clinical applicability.