The tensile strength of the wound starts and increases after
Wounds do not begin to gain tensile strength from collagen until 5 - 7 days.
Wound achieves around  20 % by 3 weeks,  and around 60 % by four months.
Scar tissue continues to remodel for at least 6 - 12 months after an injury.
Immediately after suturing
3 to 4 days
7-10 days
6 months