The healing of wounds in the skin of piglets treated with benzoyl peroxide.

Clinical and microscopic changes in the healing of dermal wounds in the skin of piglets that were treated with a 20% benzoyl peroxide lotion were compared with untreated wounds in the same animal. The wounds treated with benzoyl peroxide showed more rapid healing clinically, and a very pronounced foreign-body giant-cell infiltrate and very vascular granulation tissue microscopically. It may be that benzoyl peroxide promotes wound healing by attracting macrophages and histiocytes into the wound.