Your skin's appearance mainly reflects your health and your lifestyle. Radiant, dewy and smooth skin indicates good habits. Congested, dull and roughly textured skin suggests the opposite or that you live in New York with too many stress. To keep your skin looking its best, it's important to not only know the basics of skin care, but to understand the physiology of the skin. In addition to preserving your skin through healthy living, a basic skincare regimen is necessary. Take the time to develop a daily and nightly ritual that includes cleansing, treating, moisturizing and protecting. The products you use will depend on your individual skin type and/or condition.