The physical barrier of skin is composed of sebaceous membrane, keratin, lipids, brick wall structure, dermal mucopolysaccharides, mucopolysaccharides, etc. It protects against external harmful and irritating substances and sunlight, and has moisturizing and anti-inflammatory effects. Damaged physical skin barrier will cause dry skin, skin aging, pigmentation atopic dermatitis, eczema, psoriasis, ichthyosis, solar dermatitis and other skin allergies, irritant dermatitis, hormone dependent dermatitis and other oily skin, seborrheic diseases such as acne, rosacea and seborrheic dermatitis. A healthy skin barrier protects against external harmful substances, irritants and sunlight, and has a moisturizing and regulating effect. Having a healthy skin barrier is the same as having beautiful, natural skin. However, due to the environment, diet and wrong skin care, the skin barrier is damaged, which makes the skin’s own defense ability insufficient, and the skin is very sensitive and damaged. It is recommended to use medical skincare products with zero alcohol, fragrance-free, color-free and non-allergenic preservatives for daily skincare, which can effectively protect and strengthen the skin barrier function. If you have the conditions, you can regularly do ultrasonic import moisture essence or K8 hydration, which is also helpful to repair the skin barrier or maintain a healthy skin barrier, and the effect is faster and better!