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If your wound is not fully healed or your skin splits again, you're going to need more stitches. It's very important to see a doctor immediately if this happens. Bandaging the wound and trying to let it heal without new stitches won't be adequate. Skin regains its strength slowly. After your stitches are removed, the skin may remain weak as it continues to heal. Don't overuse the body part where you had stitches. Ultraviolet light is damaging even to healthy tissue. Use sunscreen if your wound will be exposed to the sun or when using tanning beds. It can help the healing process, but should only be used when the wound is completely closed.
See a doctor if any problems arise. Protect the wound from re-injury. Protect the wound from UV rays. Apply Vitamin E.