成年人每天总饮水量在1500—2000毫升，少量多次更易吸收。适当增加富含维生素A、E及Omega-3的 食物，如胡萝卜、南瓜、坚果、深海鱼、亚麻籽。尽量减少酒精、辛辣和高糖食物，它们会加重干燥和 炎症。适度运动能促进血液循环，但睡前3小时避免剧烈活动。冬日阳光有助于补钙，但也得讲究适 度，外出时要注意防晒和保暖，避免紫外线与寒风的双重刺激。脸部和双手每天暴露最多，清洁后立即 涂抹面霜和护手霜。 ■在医生指导下规范用药 ■始终把水分留于皮肤 保湿才是冬季护肤的硬核技能。首选含有神经酰胺、凡士林、甘油、透明质酸等成分的产品，这些成分 能在皮肤表面形成保护膜，减少水分流失。洗澡后即刻涂抹，干燥部位如小腿、手臂可适当加量，白天 任何时候感觉干痒都要随时补涂。对于特别干燥甚至起屑的皮肤，可在医生指导下使用10%—20%浓度 的尿素霜，有助于软化角质，提升保湿效果。 ■居住环境和贴身衣着并重 居家室内湿度保持在40%—60%，必要时开启加湿器，并定期清洁设备。避免空调或暖风直吹皮肤。贴 身衣物首选纯棉宽松款，远离化纤和聚酯纤维。羊毛羊绒虽保暖，但不宜直接贴身。新衣服务必充分清 洗，可加柔顺剂但要彻底漂净。 ■饮食和生活 ...

皮肤屏障功能减弱夏季的频繁清洁、紫外线伤害，可能已经让我们的皮肤屏障有些受损。进入冬 季，如果护理不当，屏障功能无法及时修复，水分流失会更快，导致干燥、瘙痒甚至敏感。 生活习惯改变天气寒冷，大家除了频繁洗热水澡外，各种取暖神器也纷纷登场。暖气、电热 毯、"小太阳"的使用，都会在不知不觉中带走皮肤的水分。 温和清洁避免洗去保护层 应对冬季皮肤干燥，首先从清洁入手，用力过猛将使脆弱的皮肤屏障"雪上加霜"。 水温适度放弃过热的水洗脸、洗澡，它会让皮肤上的天然油脂过度流失。一般水温接近体温，即 35℃至37℃为宜。 寒风凛冽，暖气烘烤，冬季是皮肤"闹脾气"的高峰期——干燥、紧绷、脱屑，甚至瘙痒刺痛？ 今天，皮肤科医生就从中西医结合的视角，聊聊如何科学应对冬季护肤挑战，拯救"干渴肌"，并介 绍能直达根源、强力补水嫩肤的"秘密武器"助您安稳过冬，肌肤水当当！ 为啥冬天皮肤容易"闹情绪" 环境"双低"攻击气温和湿度双双下降，空气中的水分减少，干燥的空气会加速皮肤表面水分的蒸 发，就像一块湿毛巾放在干燥的房间里会更快变干一样。 皮脂分泌减少我们的皮脂腺和汗腺分泌会随着气温降低而变得"懒惰"。皮脂膜是皮肤天然的"保湿 霜"，这 ...

Core Viewpoint - The article discusses the impact of winter on skin health, emphasizing the importance of proper skincare routines to maintain skin barrier function and hydration during the colder months [1][5]. Skin Structure and Function - The skin has a "brick wall" structure, primarily composed of the epidermis, dermis, and subcutaneous tissue, with the outermost layer (stratum corneum) acting as a protective barrier that retains moisture and defends against external pathogens [2]. Vulnerable Populations - Certain groups, such as the elderly and individuals with sensitive skin or pre-existing skin conditions, are more susceptible to skin dryness and barrier dysfunction during winter [3]. When to Seek Medical Attention - Symptoms such as severe itching affecting sleep, widespread rashes, or skin cracks with pain indicate a need for medical consultation, as these may signify significant skin barrier damage or inflammatory conditions [4]. Winter Skincare Essentials - The primary focus of winter skincare should be on "locking in moisture" rather than just hydrating the skin, which involves selecting appropriate moisturizing products, maintaining proper skin cleansing, and applying moisturizers promptly after bathing [5][11]. Effective Moisturizing Ingredients - Three categories of effective moisturizing ingredients include: - Occlusives: Reduce water loss (e.g., Vaseline, ceramides, natural oils) [6] - Humectants: Attract moisture (e.g., glycerin, hyaluronic acid) [6] - Soothing agents: Help reduce inflammation (e.g., panthenol, dipotassium glycyrrhizate) [6]. Cleansing Practices - Recommendations for winter cleansing include bathing every two to four days, using gentle cleansers with skin-friendly ingredients, and avoiding harsh soaps [9]. Common Skincare Mistakes - Misconceptions about skincare practices can lead to further skin barrier damage, such as: - Overusing face masks (recommended frequency is two to three times a week) [12][13]. - Frequent exfoliation with scrubs or loofahs (should be limited to once a week) [12][13]. - Assuming oily skin does not require additional moisturizing (lightweight moisturizers are still necessary) [12][14].