It also helps the skin's natural barrier protect against further age spots.

But over-exfoliating can upset your skin's natural barrier function, causing redness, sensitivity and sometimes capillary damage.

Both help boost hydration while also strengthening the skin's natural barrier function.

And in doing so, they remove the greatest natural barrier to erosion.

However, global warming had reduced rainfall and increased salt levels, meaning that the natural barrier near the coast had been eroded.