When the barrier is healthy:
skin stays hydrated
redness is minimal
oil levels remain balanced
breakouts reduce
But when the barrier gets damaged, usually from over-cleansing, harsh exfoliation, sun exposure or pollution, the symptoms start showing:
dryness or flaking
sensitivity
oil imbalance
dull texture
That is where ceramides, hyaluronic acid and niacinamide play a big role. They help rebuild the barrier, hold moisture and calm irritation, which brings us to the first step: cleansing.