Beauty and Beauty Core Analysis: A Comprehensive Guide from Skin Care Basics to Makeup Skills 1. Beauty: The Cornerstone of Building Healthy Skin Scientific Skin Care Four Steps Cleansing: Choose cleansing products that match the skin type (such as amino acid cleansing for sensitive skin), and control the water temperature at about 34 C to avoid damaging the sebum film. Moisturizing: Select moisturizing ingredients according to the skin type. For dry skin, a cream containing ceramides is suitable, and hyaluronic acid essence is optional for oily skin. Sunscreen: Ultraviolet rays are the main cause of skin aging. Sunscreen above SPF30 + and PA ++ should be used daily, and reapplied every 2 hours for outdoor activities. advanced care: exfoliate 1-2 times a week (use with caution for sensitive skin), apply a mask regularly (hydrating type 2-3 times a week, cleaning type 1-2 times a month). Synergy of internal adjustment and external nourishment Diet: Eat more foods rich in vitamin C (citrus, kiwi) and vitamin E (nuts, olive oil) to inhibit melanin production; reduce high-sugar ...