Do the blisters from poison ivy or oak rash cause the spreading?


No, not if the oil has been removed from the skin.  The blisters are the body's natural allergic reaction to the initial contact with the urushiol oil.  The only thing that causes the rash is contact with urushiol oil.  The oozing from the blisters does not spread the rash.

Tecnu Original uses

What Tecnu Do I Use?

Not sure what Tecnu to use? Check out our infographic.