These lipids form a natural protective barrier and minimise water loss. If the skin has a lack of lipids, tightness and redness can quickly occur.
Finally, there is also dry skin that suffers from both too low a moisturising factor and from a lack of lipids.
The individual severity of redness, irritation or flakiness in dry skin depends on the particular skin structure.
You can find out more about very dry skin and how to look after it here.
The skin is also unable to naturally regenerate without moisture, as the messenger substances for building new skin cells cannot reach the areas where they are needed without water.
Moisture is particularly important for maintaining the elasticity of our skin. Without water, every small movement would tear the skin.
You can find more hints and tips about achieving beautiful skin here.