The crystals behind DIY cleaning

Three of the key ingredients in your Under Your Sink toolkit started their journey not in a lab, but in the Earth itself.

Long before modern chemistry and cleaning products existed, nature formed mineral rich crystals through geological processes that took millions of years. Volcanic activity, water movement and evaporation left behind layers of dissolved minerals that eventually crystallised into the raw materials we now use for cleaning.

Crystals such as trona, natron and thermonatrite are examples of these natural deposits. From them we derive ingredients like sodium carbonate (washing soda) and sodium bicarbonate (bicarb soda)  and Borax,

These minerals were formed by water dissolving rocks and transporting dissolved ions. When the water body slowly evaporated, it left behind concentrated brines that solidified into crystal deposits. Today, these are mined and refined into the powdery forms we use for cleaning.

 

The natural origins of your toolkit

The story behind these “cleaning crystals” helps explain why they work so well:

• Washing Soda (Sodium Carbonate) comes from mineral sources like trona, and its high alkalinity makes it excellent at breaking down grease, lifting stains and softening hard water.

• Bicarb Soda (Sodium Bicarbonate) is also a mineral derivative, gentler than washing soda but still an effective deodoriser and mild cleaner.

• Borax (Sodium Borate) is another historic mineral, found in dry lake beds where mineral‑rich water has evaporated over time. Its alkalinity and water‑softening properties support cleaning without overwhelming a recipe.

These ingredients have been used in one form or another for centuries. While we now use modern refinement methods to produce consistent, high‑quality powders, their origins are ancient and rooted in natural geology.

Why  his matters

Understanding where these crystals come from helps you:

• Recognise that they are real, naturally occurring substances, not marketing buzzwords.
• Appreciate why they work — they aren’t just randomly chosen; their chemistry directly affects cleaning outcomes.

• Choose ingredients with confidence rather than being swayed by branding or confusing labels.

Today, industrial processes make mining and refining these minerals far easier than it was for early prospectors. But the underlying chemistry remains the same — and that’s what gives you predictable results in your DIY cleaning recipes.

The Science of Crystals and Cleaning

Some people talk about crystals having an “energy” or “power” that makes them clean. While that language can be poetic, the real explanation is scientific: these mineral crystals dissolve in water to form alkaline or neutral solutions that interact with soils and stains in predictable ways.

• Alkalinity helps grease and oils detach from surfaces.
• Water softening enables soaps and surfactants to work without fighting mineral ions.
• Fine particles can provide gentle mechanical action in pastes and scrubs.

Once you look past the mystique, you can see these crystals are practical, effective cleaning tools that nature has provided.