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Leverage the science of solubility to outsmart stubborn grime without the extra effort.
CLR’s patented, proprietary formulas work at a microscopic level to target your worst messes.
This isn't just about cleaning... it’s about using chemistry to restore your surfaces and give you a professional-grade clean that’s safe for your home, your family, and the planet.
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While certain traditional cleaners may try to mask stains or use abrasive grit that scratches your surfaces, CLR utilizes targeted chemical reactions to eliminate the root cause of the mess.
Our product combines mild organic acid, surfactants, wetting agents and chelants, all EPA Safer Choice approved.
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Engineered for efficiency, our powerful formula is able to remove hard water stains in only 2 minutes or less.
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All ingredients in our products readily biodegradable and greater than 80% are made from plants.
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From mineral crystallization to chemical oxidation, we’re breaking down the complex science behind your most common household messes. Explore the below videos to learn more.
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01 - Hard Water
The calcium and magnesium in hard water leave behind more than just spots on your fixtures. When water evaporates, these minerals crystallize, forming a rock hard layer that restricts water flow and dulls surfaces. CLR uses a process called chelation, where our formula wraps around these mineral ions, pulling them into a liquid state so they simply rinse away.
Chemistry Fact
Calcium carbonate has a crystalline structure that bonds to surfaces like cement. Only a low-pH, non-toxic acid can break that bond without harming the metal underneath.
02 - Soap Scum
Soap scum is created when the fatty acids in your soap react with the minerals in your water. This creates a sticky, opake layer that traps bacteria and skin cells. The surfactants in CLR reduce the surface tension of the water, allowing our cleaning agents to get underneath the scum and lift it away from the tile or glass.
Chemistry Fact
Soap Scum is technically an “insoluble salt”. CLR’s acid based chemistry converts these solid salts back into a liquid state, so they can be washed down the drain.
03 - Well Water
Unlike municipal water, Well Water is an untreated mix of raw earth minerals like iron, calcium, magnesium, and manganese. When these minerals hit the air in your home, they oxidize, turning into stubborn orange stains, discoloration on fixtures, and the black stains commonly found in toilets. CLR acts as a neutralizing agent, dissolving these heavy mineral deposits on contact and restoring the original finish of your sinks, toilets, and appliances.
Chemistry Fact
CLR utilizes a process called chelation. The formula's molecules act like microscopic claws that surround mineral ions, preventing them from re-attaching to your surfaces during the cleaning process. CLR's proprietary formula can also remove Manganese soils in addition to carbonate and iron deposits.
04 - Rust Stains
Rust (Iron Oxide) occurs when oxygen and moisture meet metal. Some cleaners just try to bleach the orange color, but CLR actually changes the chemical state of the rust. By reacting with the iron oxide, our formula converts the hard, orange stain into a colorless, water-soluble compound that can be wiped away with a sponge.
Chemistry Fact
When iron in water meets oxygen, it creates iron oxide (rust). CLR performs a “reduction” reaction, which strips the oxygen away from the iron, effectively turning it’s orange stain back into a clear, colorless liquid.
05 - Natural Clean
6 Ingredients. Zero Compromise. We believe in transparent chemistry, which is why our formula is built on just six biodegradable, naturally derived components. From lactic acid found in yogurt to gluconic acid found in fruit, we can harness the power of nature to create a high-performance cleaner that is as gentle on your home as it is tough on grime.
“Earth-Friendly” refers to biodegradability. For 100% natural ingredients, try CLR All-Natural.
Chemistry Fact
CLR’s primary active ingredient is Lactic Acid, a plant-derived organic compound found in yogurt and cheese. It naturally dissolves alkaline mineral deposits like lime and calcium while remaining 100% biodegradable.
