Recently healed wounds
Once, a wound is closed, the newly formed tissues are still very fragile. Tissues need to mature in order to get the original strength.
The maturation phase can last for a year or longer, depending on the size of the wound and whether it was initially closed or left open. During maturation, type III collagen,whichis prevalent during proliferation, is gradually degraded and the stronger type I collagen is laid down in its place. Originally disorganized collagen fibers are rearranged, cross-linked, and aligned along tension lines.
As the phase progresses, the tensile strength of the wound increases, with the strength approaching 50% that of normal tissue by three months after injury and ultimately becoming as much as 80% as strong as normal tissue. Since activity at the wound site is reduced, the scar loses its red appearance as blood vessels that are no longer needed are removed by apoptosis.