Castor Oil on Surgical Incisions: Not Recommended
Do not apply castor oil to a 3-week-old surgical incision. There is no evidence supporting its use for wound healing, and established wound care guidelines do not recommend it for incision care.
Why Castor Oil Should Be Avoided
No guideline support: Major surgical wound care guidelines from ERAS Society, WHO, and CDC make no mention of castor oil as an appropriate wound care agent 1.
Limited evidence for wound healing: While one small retrospective study showed castor oil-containing ointment (combined with balsam of Peru and trypsin) assisted with skin graft donor sites, this was a specific formulation for partial-thickness wounds, not closed surgical incisions 2.
Castor oil is primarily a laxative: Its main medical use is as a stimulant laxative affecting bowel function, not wound healing 3, 4.
Potential for contamination: Applying non-sterile substances to healing incisions risks introducing bacteria and causing surgical site infections 1.
Proper Care for a 3-Week-Old Incision
At 3 weeks post-surgery, the incision should be well-healed and require minimal care 1.
Standard wound care recommendations:
Keep the area clean and dry: Cleanse with soap and water of drinking quality 1.
No dressings typically needed: After initial healing (5-7 days), dressings can be reduced or omitted entirely, and the site can be left open 1.
Avoid occlusive products: Petroleum-based products and occlusive dressings should be avoided as they can promote moisture accumulation and skin maceration 1.
Monitor for complications: Watch for signs of infection including erythema, induration, pain, or drainage 1.
When to Seek Medical Attention
Contact your surgeon if you notice: