Follow your surgical team's instructions about dressings and keeping the wound dry - teams differ, and theirs is the advice that counts.
Watch the warning signs: increasing redness or heat around the wound, fluid or pus leaking, a wound that opens, or fever. If any of these appear, contact your clinician the same day.
Once the wound is fully healed and your team agrees, gentle massage of the scar with a plain moisturiser can help it become softer and less sensitive. A scar that stays slightly warm and raised for months is common.