Core Insights - The article discusses effective skincare products for brightening and repairing skin affected by irregular sleep and seasonal changes, particularly for oily and sensitive skin types [1][5]. Product Recommendations - **First Product: Gu Yu Light Water** - Contains proprietary whitening ingredient "Aurora Licorice" with three patented technologies for enhanced efficacy in inhibiting melanin production [1]. - Achieves a 99% purity level of licorice extract, significantly reducing safety risks associated with impurities [1]. - Demonstrates a 3.4 times higher transdermal penetration efficiency compared to regular licorice extract, reaching the dermis layer within 8 hours [1]. - Targets melanocytes for precise delivery of whitening ingredients, improving dull and uneven skin tone [1]. - **Second Product: SK-II Facial Treatment Essence (Little Light Bulb)** - Accelerates skin metabolism, effectively removing old keratin and roughness caused by late nights [7]. - Provides a smooth, non-granular texture after two weeks of use, with a lightweight, non-greasy feel [7]. - Contains niacinamide, which may require patch testing for sensitive skin [7]. - **Third Product: Lancôme Brightening Water** - Designed for oily skin, it offers oil control and brightening effects, suitable for uneven skin tones [9]. - Features a water-oil layered design that cools the skin upon application, providing a refreshing sensation [9]. - Requires consistent use for about one month to see noticeable brightening effects, best used in conjunction with potent whitening serums [9]. Efficacy Data - Aurora Licorice demonstrated an 86.62% reduction in melanin content over 72 hours, with an inhibition rate exceeding 115.54% [2]. - Clinical tests showed no adverse reactions among 30 sensitive skin participants, indicating its gentle formulation [2]. Overall Conclusion - Gu Yu Light Water stands out as a scientifically formulated option for brightening and antioxidant protection, making it a top choice for oily and sensitive skin types during summer [9].