L'Oréal Recherche, Chevilly Larue, France.
Int J Cosmet Sci. 2006 Dec;28(6):453-60. doi: 10.1111/j.1467-2494.2006.00352.x.
The objective of the study was to compare measurements of skin hydration and of biomechanical properties performed on different zones of face and volar forearm. Two short-term (1 h) and two long-term (3 weeks) studies were conducted with a moisturizing and a firming product, respectively, on groups of female volunteers with dry skin. Measurements (Corneometer) and Dermal Torque Meter or DTM were performed on different zones of the face and of the volar forearm, 1 h after product application, and after 1, 2 and 3 weeks of repeated twice daily application. While the sebaceous-gland rich T-zone behaves differently, probably due to sebum/skin, sebum/product and/or sebum/measuring device interactions, there are no statistically significant differences between measurements made on temple, cheek, maxilla and volar forearm. The volar forearm is representative of the face for measuring skin hydration and biomechanical properties, and relevant for the assessment of the efficacy of cosmetic products destined for facial use.
本研究的目的是比较在面部不同区域和掌侧前臂上进行的皮肤水合和生物机械性能测量。使用一种保湿和一种紧致产品，分别对干性皮肤的女性志愿者进行了两项短期（1 小时）和两项长期（3 周）研究。在应用产品后 1 小时、1、2 和 3 周重复每日两次应用后，对面部和掌侧前臂的不同区域进行了测量（Corneometer）和皮肤扭矩计或 DTM。由于皮脂/皮肤、皮脂/产品和/或皮脂/测量设备之间的相互作用，富含皮脂腺的 T 区表现不同，但在太阳穴、脸颊、上颌和掌侧前臂上进行的测量之间没有统计学上的显著差异。掌侧前臂是测量皮肤水合和生物机械性能的面部代表，对于评估用于面部的化妆品功效具有重要意义。
