Moisturisation aims to trap and lock the water content of your skin so as to enhance your skin’s protective barrier function. Moisturisation prevents water loss from your skin and ensures that your skin stays soft and smooth.
An enhanced skin barrier not only locks hydration but also prevents the entry of pathogens. If your skin does not produce enough lipids or oils, the barrier function of the skin is weakened.
Moisturisers contain occlusive ingredients such as petrolatum, silicone derivatives, lanolin, lecithin, etc. which enhance the skin’s barrier function and facilitate locking the moisture within the skin. They may also contain ceramides, the natural lipids of your skin, that protects it from damage due to pollution and other environmental stresses.