2.5. Skin Hydration
SKIN
Skin hydration was measured at 0, 4, and 8 weeks using the Corneometer CM825 (Courage&Khazaka electronic GmbH). The Corneometer numerically displays skin capacitance at 30-40 μm below the stratum corneum, indicating hydration through the insulating ions remaining in the probe head (A.U.). Dermal hydration was measured using Moisturemeter D Compact (Delfin Technologies Ltd., Kuopio, Finland), which utilizes a 265 MHz high-frequency electromagnetic field to penetrate to a depth of 2 to 2.5 mm in the skin, measuring the tissue dielectric constant in terms of moisture content (%).