Can I add water to Tecnu Original poison oak cleanser to make it last longer?
Tecnu Original Outdoor Skin Cleanser is designed to be used full strength. To use, apply the cleanser directly to the skin (or item being cleaned) without adding water. Rub vigorously for 2 minutes into the affected area and then follow up by rinsing with water or wiping off with a cloth. If water is mixed with Tecnu Original before application, it will be diluted and not effective.
If you are looking for a cleanser to use with water, while taking a shower for instance, we recommend using Tecnu Extreme Poison Ivy Scrub which is designed to be used with water.