Which of the following should NOT be applied to a clean wound?

Using antiseptic solutions on a clean wound can actually hinder the healing process. While it may seem that applying antiseptics would help prevent infection, these solutions can be harsh and can damage healthy tissue, leading to delayed healing and increased pain. Clean wounds generally require minimal intervention to promote natural healing and are better left with appropriate wound care practices like keeping them clean and covered with sterile dressings or non-adhesive bandages.

Other options are supportive in the care of clean wounds. For example, cool water can be used to gently cleanse the wound without causing trauma, and sterile dressings or non-adhesive bandages are meant to protect the wound from contaminants while allowing it to breathe and heal properly. It's important to use gentle, non-harmful methods when caring for clean wounds to avoid complications.