How often should you clean a slightly healed deep cut with peroxide?

Peroxide should not be used to clean a deep cut, as it can damage the newly formed tissue and slow down the healing process. Instead, you should gently wash the cut with mild soap and water, and pat it dry with a clean cloth. You can also apply a thin layer of antibiotic ointment to the cut to help prevent infection. If the cut is deep, you should also see a doctor to make sure it is properly treated.