Core Insights - The article emphasizes the importance of maintaining hydration and stability in skincare during seasonal changes, as many individuals experience dryness and sensitivity [4][21]. Product Overview - Kiehl's Ultra Facial Cream is highlighted as a well-known product that effectively addresses seasonal skin issues, priced at 218 yuan for a 125ml large capacity [5][6]. - The product is currently offered at a discounted price due to a reduction in the supplier's price, with a special offer of 399 yuan for two bottles [7][24]. Key Ingredients - The cream contains two main active ingredients: Squalane derived from olives and Glacier Proteins, which provide deep hydration and strengthen the skin barrier [14][16]. - Squalane is noted for its excellent skin compatibility, quickly penetrating the skin and forming a natural moisture barrier, making it suitable for all skin types, including sensitive skin [19]. - Glacier Proteins are highlighted for their ability to protect the skin from extreme weather conditions and enhance the skin's resilience during seasonal transitions [21][23]. Brand Background - Kiehl's, established in 1851 in New York, has a long-standing reputation for combining natural ingredients with scientific research, making it a trusted choice for consumers, including many Hollywood celebrities [10][12].

Core Viewpoint - The article discusses skincare products suitable for sensitive skin during seasonal changes, highlighting their soothing, barrier-repairing, and moisturizing properties [1][3]. Group 1: Recommended Products - The first recommended product is "谷雨光感水," which is effective for brightening and repairing the skin barrier, featuring a unique ingredient "极光甘草" that can reduce melanin content by 86.62% within 72 hours [3][4]. - The second product, "Fresh红茶精华水," is noted for its lightweight texture and ability to improve skin dullness and dryness, enhancing skin luminosity and smoothness over time [5][8]. - The third product, "YSL夜皇后精华," is designed for nighttime use to accelerate skin repair and enhance radiance, particularly beneficial for tired skin after late nights [9][11]. Group 2: Product Benefits - "谷雨光感水" is suitable for sensitive skin, with clinical tests showing no adverse reactions among 30 sensitive skin participants [4]. - "Fresh红茶精华水" can be used by all skin types and provides long-lasting hydration, especially beneficial during seasonal transitions [8]. - "YSL夜皇后精华" is recommended for those with sensitive skin to conduct patch tests before full application, ensuring compatibility [12].