A scar that forms during a healing process is a connective tissue that replaces the tissue damaged by an injury or an illness. The scarring process is a part of an ordinary wound healing process during which the damaged skin is being replaced by a new, well-vascularised, granulationing (growing) tissue with numerous collagen fibres that cross-link and form an alignment is single direction, in opposition to a randomized alignment of fibres in the normal skin.