Hydrogen peroxide for minor cuts, ulcers and abrasions. Dosage/How To Use Uses First Aid (minor cuts, wounds, ulcers, abrasions) • Dilute 1 part peroxide with 1 part water • Apply diluted solution with lint or cotton wool onto affected area. Allow oxygen to escape and then dress with bandage or adhesive plaster To remove dressings from wounds • Dilute 1 part peroxide with 1 part water • Soak the dressing thoroughly with the diluted solution and leave for a few minutes before removal Mouthwash • Add 1 tablespoon peroxide to half a tumbler of water and use as necessary