You should wash with Cleanse once before applying Treat. You should only need to repeat using Cleanse if you are concerned the rash-causing oil is spreading or if you are exposed to poison ivy/oak oil again.
This content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on this Website.