Scar Biology

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The scar tissue does not have a fully developed stratum corneum – its own barrier, which has a great influence on the hydration of deeper parts of the skin. This allows inadequate water loss through the skin. The scar therefore becomes dehydrated, and the sebaceous glands are also destroyed after the injury. Thus, the scar tends to be dry.

Dryness of the scar increases the activity of the cells in the scar, which then produce even more collagen fibres and worsen the character of the scar. A dry scar can be recognised by scaling. The ideal scar lubricant should meet several criteria: it should penetrate as deeply into the scar as possible, it should not be allergenic or irritating and it should be affordable.

UV protection and compatibility with possible pressure devices are highly desirable. There is therefore no single opinion or specific product to recommend. Some substances have an effect on the scar and it is advantageous if the product contains them, e.g. aloe vera extracts have shown a positive effect on hydration and itching. Vitamin E is also recommended. The creams may also include other plant extracts that affect inflammation in the scar.