Yes, it is necessary. Skin’s stratum corneum (outer layer) is usually filled with moisture. However, without adequate hydrating care, the moisture soon evaporates, leaving skin in a dry and rough condition. The most effective moisturizing care is the “3-minute moisturization”. Within 3 minutes of drying off excess water after a bath or shower, while skin is still damp, apply moisture milk or cream containing moisturizing components such as ceramide to prevent skin from dryness.