Your skin barrier is a defense layer or shield against outside irritants, such as environment pollutants, UV damage, infection and toxic chemicals. When your skin barrier is working correctly and balanced, its ability to maintain good hydration and elasticity is more evident. A thin, weak or damaged skin barrier allows irritates to penetrate easily. Having a strong surface layer is important to reducing skin sensitivity.
Skin permeability barrier function is a self-regulatory system, predetermined to stay hydrated. When there is not enough moisture present, your skin will over correct by producing more oil. If the skin barrier system is disturbed, a dysfunctional barrier can lead to breakouts, it leads to (dehydration) transepidermal water loss, sensitivity, pigmentation, inflammation in the skin and premature aging.