Forearm skin aging: characterization by instrumental measurements

Area of Science:

• Dermatology and aging research.
• Biophysics of skin.
• Photoaging and intrinsic aging mechanisms.

Background:

• Intrinsic and photoaged skin exhibit distinct biomechanical and morphological differences.
• Visible signs include roughness, wrinkles, reduced elasticity, and pigmentation changes.

Purpose of the Study:

• To compare the characteristics of flexor (intrinsic aging) and extensor (photoaging) forearm skin.
• Evaluate clinical parameters and non-invasive instrumental measurements.

Main Methods:

• Prospective diagnostic study involving 23 females over 60 years old.
• Comparison of flexor and extensor forearm skin using clinical assessment and non-invasive tools.
• Measurements included skin surface, elasticity, hydration, dermal thickness, and echogenicity.

Main Results:

• Flexor skin showed higher stratum corneum water content and greater echogenicity.
• Significant differences in skin surface measurements; flexor skin had lower roughness and scaliness.
• Wrinkles were present in both intrinsic and photoaged skin; elastosis and reduced elasticity were noted in photoaged skin.

Conclusions:

• Significant biophysical differences exist between intrinsic and photoaged forearm skin.
• Non-invasive measurements correlate with clinical findings.
• These tools are valuable for assessing the efficacy and safety of skin aging treatments.