Sleep is a turning point at '6 hours' - Analyzing the relationship between sleep and skin condition from awareness surveys and skin measurement data

Nippon Menard Cosmetic Co., Ltd. (3-18-15 Marunouchi, Naka-ku, Nagoya, Aichi; President: Junichi Nonogawa) conducted an awareness survey on sleep and skin concerns targeting 1,105 women aged 20s to 60s. Concurrently, actual skin conditions were measured in 65 women of the same age group, and the correlation with sleep was analyzed. It is widely believed that sufficient sleep is crucial for nurturing beautiful skin. Therefore, Menard investigated the relationship between women's sleep, skin concerns, and actual skin conditions. The survey revealed that 27% reported 'less than 5-6 hours' of sleep, and 29% reported 'less than 6-7 hours', with these two groups accounting for the majority (56% combined). On the other hand, the proportion of those feeling sleep-deprived significantly increased when sleep was less than 6 hours, with 44% in the 'less than 5-6 hours' group and 20% in the 'less than 6-7 hours' group. This indicated a substantial shift in satisfaction around the 6-hour mark. Furthermore, comparing those with 'less than 6 hours' of sleep and '6 hours or more' of sleep, the age at which skin concerns such as wrinkles, sagging, and spots began to be noticed differed significantly. For wrinkles, it was 38.2 years (less than 6 hours) versus 46.9 years (6 hours or more); for sagging, 36.3 years versus 41.0 years; and for spots, 19.4 years versus 23.5 years. Similar trends were observed for fine lines and dullness, suggesting that individuals sleeping less than 6 hours tend to experience skin concerns at a younger age. Moreover, actual skin measurements showed that those with 'less than 6 hours' of sleep had more wrinkles and melanin, lower radiance and brightness, and higher yellowness. These results demonstrate that sleeping 6 hours or more not only increases satisfaction but also contributes to delaying the appearance of skin concerns and maintaining a good skin condition. However, securing 6 hours or more of sleep is not easy for busy modern individuals. If you are concerned about your skin condition, it is important to review your sleep habits and incorporate skincare tailored to your skin type. [Awareness Survey Results] ■Sleep duration's major zones are less than 5-7 hours ■Sleep satisfaction significantly changes at the 6-hour mark When investigating sleep duration, the most common was 'less than 6-7 hours' at 29%, followed by 'less than 5-6 hours' at 27%, with these two groups forming the majority (56% combined). Broken down by age group, sleep duration gradually shortened from people in their 20s to 50s, but lengthened for those in their 60s. Next, looking at the proportion of those feeling sleep-deprived, approximately 30% overall felt sleep-deprived. By sleep duration, this was 44% for 'less than 5-6 hours' and 20% for 'less than 6-7 hours', showing a significant increase and more than double the difference for those sleeping less than 6 hours. From these results, it became clear that sleep satisfaction changes significantly at the 6-hour mark. ■People with '6 hours or more' of sleep are less likely to experience skin concerns When comparing sleep duration and the age at which skin concerns begin to appear*, individuals sleeping less than 6 hours showed a tendency for wrinkles, sagging, and spots to emerge at a younger age. Particularly for wrinkles, a difference of approximately 9 years (8.7 years) was observed, with 38.2 years versus 46.9 years. Similar trends were confirmed for sagging, spots, fine lines, and dullness. [Skin Measurement Results] ■'6 hours or more' of sleep results in better skin condition Skin measurements were conducted on 65 women aged 20s to 60s (average 45.3 years), comparing those with 'less than 6 hours' of sleep (29 individuals, average 48.0 years) and '6 hours or more' of sleep (36 individuals, average 43.2 years). The results showed that individuals sleeping 6 hours or more had better skin conditions as follows: 　〇Fewer under-eye wrinkles 　〇Less melanin 　〇Higher radiance 　〇Higher brightness (L* value) 　〇Lower yellowness (b* value) These results indicate that individuals with 6 hours or more of sleep have better skin conditions. This survey confirmed that individuals with 6 hours or more of sleep have higher sleep satisfaction and are less prone to skin concerns. Furthermore, skin measurements also showed that those with 6 hours or more of sleep had better skin conditions. On the other hand, for busy modern individuals, securing 6 hours or more of sleep is not easy. If you are concerned about your skin condition, it is important to review your sleep habits and incorporate skincare tailored to your skin type. Utilizing skin measurements, which offer skincare suggestions based on measurement results, is also effective as a means to understand your current skin condition. Menard's Skin Beauty Advice AI System Based on skin images taken with a smartphone and a dedicated camera, Menard's proprietary AI comprehensively determines the current skin condition. There are 15 measurement items, including moisture content, dermal condition, potential spots, and dullness. Skin age.