Dirt

Good day,

So the purpose of this article, to enjoy a nice refreshing soak (in water) and write about things I've learned. I express as things I've learned because. You don't need someone to tell you to wash your hands to wash your hands. Also, stay out of other people's business, every person comes with their own individual backgrounds, with that please, enjoy.

P.S. apologies for the clickbait title. While dirt is good for last resort cleaning and purification it is not cleaner than soap and one should not eat it, please do not eat dirt -kindly fellow Human. (Though under extreme or chocolate covered conditions, I wouldn't mind having a nice juicy grub worm like Pumba does for dessert.)

Dirt

The Definition of Clean

By Corey W Harland

We tend to think of hygiene as a modern invention, imagining a straight line that runs from the muddy, plague-ridden streets of the Middle Ages directly to our pristine, antibacterial-tiled bathrooms. But if you strip away our modern infrastructure, an astonishing truth emerges: ancient civilizations understood the physics of getting clean long before they knew germs existed. When water—the universal solvent—was entirely unavailable in the harsh, sun-baked landscapes of the ancient world, our ancestors didn't just accept being dirty. Instead, they reached for the very ground beneath their feet—using dry earth, desert sand, volcanic ash, and polished stones—to develop brilliant, grit-driven survival hygiene hacks that modern science is only now fully breaking down.

To understand how dry earth can actually leave you cleaner than before, you have to stop looking at dirt as mere filth and look at it as a highly structured matrix of raw materials. Healthy, dry soil is roughly forty-five percent inorganic mineral matter, perfectly split into sand, silt, and clay. When you vigorously rub dry earth or sand over your skin, the medium-to-coarse mineral grains of sand and silt act like natural sandpaper. They create physical friction that cuts straight through sweat, oils, and stubborn bacterial biofilms—those microscopic, sticky shields that germs build to lock themselves onto your skin. Simultaneously, the micro-fine clay particles act like cellular sponges, using their native negative electrical charge to physically bind to the lipid walls of bacteria and excess skin oils, literally pulling them out of your pores. Because water-dependent pathogens like E. coli or Salmonella need moisture to survive, rubbing your hands with bone-dry, highly absorbent desert sand rapidly dehydrates these sensitive microbes, rendering them inactive through a process called desiccation.

Because ancient peoples couldn't see bacteria under a microscope, these highly practical physical behaviors were encoded into religious and cultural laws to ensure everyone practiced them safely—which is exactly where we see the famous "Rule of Three" emerge across historical traditions. In Islamic jurisprudence, when water is completely unavailable in the desert, a practice called Tayammum—dry ablution using clean earth—is permitted alongside Istijmar, which is using stones or dry clay to clean oneself. The Prophet Muhammad (PBUH) explicitly established that a person must utilize a minimum of three stones or three distinct physical sweeps to clean themselves. From a mechanical standpoint, this minimum is flawless: the first sweep breaks up and forcefully displaces the dense, sticky bulk of the organic impurity; the second sweep scrapes away the remaining micro-residue left behind; and the third sweep provides a final, definitive clear to ensure both the contaminant and any loose earth are completely gone from the skin. To ensure people weren't just caking themselves in dusty grime, historical records show the Prophet explicitly struck the clean earth with his palms and then blew the excess dust off his hands before wiping his face and skin—proving that it wasn't about putting dirt on, but rather using the clean, abrasive contact of the earth to lift things off.

We see this exact loop of repetitive, structured washing mirrored in the neighboring Semitic tradition of Judaism with the practice of Netilat Yadayim—which requires pouring water over each hand a sequence of two or three times before eating bread. Ancient Rabbinic commentary explains that a single splash of water merely loosens the physical impurity, technically rendering that first layer of water unclean, meaning it requires a second and third pouring to completely flush the contaminated water entirely off the skin. This human intuition to use the earth’s crust as a biological reset button wasn't isolated to the Near East. Centuries before industrial soap bars arrived, the Indian subcontinent relied on Ubtan—a traditional paste combining chickpea flour with Multani Mitti, or Fuller’s Earth. Massaged into the body before major festivals and weddings, this specialized cosmetic clay utilized its high-absorbency properties to deeply vacuum oils out of the pores. Similarly, in the rigorous Barashnium purification rites of ancient Zoroastrianism, individuals who had undergone severe contamination were scrubbed using an ammonia-rich wash immediately followed by a vigorous rubbing with clean, dry earth—which acted as a heavy-duty mechanical towel to strip away the chemical moisture before a final water rinse. Even the physical deployment of earth minerals manifests visually when Japanese Sumo wrestlers throw handfuls of coarse salt into the ring before a match—behaviorally mimicking the ancient human practice of scattering abrasive minerals to purify a space.

When modern science finally mastered industrial chemistry, we didn't throw out these ancient principles of earth-cleansing; we just industrialized them. Modern body washes and bar soaps completely mimic the oil-absorbent qualities of micro-fine clay using molecules called surfactants, which possess a dual personality featuring one oil-loving end and one water-loving end. When you lather up, the oil-loving tail binds aggressively to body grease and bacterial walls—functioning exactly like a clay particle—except that when you rinse, the water-loving head hitches a ride with the tap water to flush the trapped germs seamlessly down the drain. And for the toughest jobs, heavy-duty mechanics' soaps like GoJo or Fast Orange skip the subtle chemistry and mix in highly calibrated volumes of pumice—which is pulverized volcanic rock—or fine silica. Modern manufacturing is directly copying the exact mineral abrasives used by ancient desert travelers because when chemical soap isn't enough to break through industrial engine grease, you need controlled grit to break apart industrial biofilms without tearing the underlying skin.

Next time you open a classic wilderness survival handbook or Bushcraft guide, you will find this exact same advice detailed for emergency operations: if you run entirely out of camp soap in the backcountry, use fine river sand or wood ash to scour your cooking pots and hands. The history of self-hygiene reveals that human beings are incredibly adaptive, and long before we had the technology to see our invisible microscopic enemies, our ancestors utilized the physics of the earth to keep them at bay. Whether it was an ancient traveler executing Tayammum three times in a sun-baked desert or a modern wilderness guide using crushed volcanic rock to lift grease, humanity has always known that the best way to get clean is to trust the very crust of the planet we walk on.

References:

• Al-Bukhari, Muhammad. Sahih al-Bukhari.

• California Institute of Technology (Caltech). "Drought Leads to Increased Antibiotic-Resistant Microbes in Soils."

• Centers for Disease Control and Prevention (CDC). "Handwashing Data and Statistics."

• Wiseman, John "Lofty". The SAS Survival Handbook. HarperCollins Publishers.