A Mechanic's Hand Scrub Changed How I Deal With Poison Ivy

Hey, I'm Kyle. This is a simple, no-fuss site about the one product that saved me from years of miserable poison ivy rashes. No gimmicks, just what worked for me.

TL;DR: Poison ivy rash is caused by an oil called urushiol. Specialty washes like Tecnu work by degreasing your skin to remove it. Full Bore Extreme Green is a mechanic's hand scrub that uses the same principle for a fraction of the price. I've used it for years. Skip to the product ↓

My Story

I'm terribly allergic to poison ivy. A few years back, I got it on roughly a third of my body. I'm not exaggerating — arms, legs, torso, neck. The rash lasted over a month. I couldn't sleep. I couldn't focus at work. It was genuinely the worst stretch of my life.

After that nightmare, I became obsessed with never letting it happen again. I stocked up on Tecnu® — the go-to poison ivy wash that everyone recommends. And it works. I'm not going to pretend it doesn't. But at $10–$15 for a small 4 oz tube, I was burning through bottles every summer. When you're outdoors a lot and washing down after every hike or yard work session, those little tubes add up fast.

So I started digging into what Tecnu actually is. And that's when things got interesting.

What Tecnu Actually Is (A Brief History)

Tecnu® was invented in the early 1960s by a chemist named Dr. Robert Smith. Here's the wild part: it wasn't designed for poison ivy at all. It was originally formulated to wash radioactive fallout dust off of skin — a Cold War–era product sold in 5-gallon buckets as a bomb shelter staple.

The poison ivy connection was an accident. Dr. Smith's wife, Evelyn, discovered that the cleanser happened to be really effective at removing urushiol — the invisible oil in poison ivy that causes the rash. The company pivoted, and Tecnu became the household name it is today.

Dr. Smith started Tecnu Enterprises in 1977 out of his garage in Corvallis, Oregon, later renaming it Tec Laboratories. In 2024, the company was acquired by Quest Products, LLC.

At its core, though, Tecnu is a degreaser. That's literally what it does — it strips oily substances off your skin. Urushiol is a plant-based oil. Remove the oil, prevent the rash. Simple as that.

The Connection I Made

Once I understood that the whole game is just degreasing your skin, I started looking at what else can do that. And it turns out mechanics have been solving this exact problem since the 1970s.

Full Bore's Extreme Green (formerly known as Mean Green) is a hand scrub that's been used by automotive and industrial mechanics since 1979. Same formula for over 40 years. It's made with detergents and pumice grit — no harsh solvents, just soap and abrasive. It was designed to strip grease, oil, and grime off hands at the end of a work day.

(The name changed from "Mean Green" to "Extreme Green" because another company owned the trademark on "Mean Green." Same product, same formula, just a different label.)

The principle is identical to what Tecnu does: break down and lift oil off skin. Except you get a 16 oz jar for the price of a 4 oz tube of the name-brand stuff.

What I Use

Full Bore Extreme Green Power Hand Scrub

16 oz Jar · Same formula since 1979

  • Detergent + pumice grit strips oil off skin
  • No solvents or harsh chemicals
  • 16 oz jar lasts an entire season
  • A fraction of the cost of specialty poison ivy washes
  • I keep one at home and one in the truck
Check Price on Amazon

How I Use It

My routine is pretty simple:

  1. Scrub as soon as possible after exposure. Within the first hour is ideal — before urushiol has time to fully bond to your skin. The sooner the better.
  2. Apply a generous amount to dry skin. Don't wet your hands first. The grit needs friction to work. Scrub hard for 30–60 seconds, getting into every crease and under your nails.
  3. Rinse with cool water. Hot water opens pores, which you don't want. Cool water, thorough rinse. Repeat if you had heavy exposure.
  4. Wash your gear too. Urushiol stays active on clothing, shoes, tools, and even pet fur for months. If it touched the plant, wash it down.

I also keep a jar in my truck. If I'm out hiking or doing yard work and I suspect contact, I can scrub right there without waiting to get home. That immediacy makes all the difference.

A Few Honest Notes

I want to be upfront about a few things:

  • Tecnu works. I'm not bashing it. If you already have some and it's working for you, keep using it. My point is just that you might not need to spend that much.
  • This isn't a medical product. Extreme Green is a hand scrub made for mechanics. It's not marketed or FDA-approved for poison ivy. I'm sharing what works for me personally — removing the oil before it causes a reaction.
  • If you already have a rash, it won't prevent it. Once the rash has developed, removing the oil is too late. That said, I found that the sandy, gritty texture of the scrub did help temporarily alleviate the itchiness even after the rash appeared — similar to how scratching feels good but without tearing up your skin. It's not a treatment for the rash itself, though. For that, see a doctor or use calamine, hydrocortisone, or whatever your physician recommends.
  • Everyone's skin is different. If you have sensitive skin, test a small area first. It's a gritty scrub — it's not gentle. That's the point, but it's worth knowing.

That's It. That's the Whole Site.

No upsells, no email list, no "10 Best Poison Ivy Products" listicle. Just one guy who got tired of expensive tiny tubes and found something that works for a lot less.

Check It Out on Amazon