You may have noticed that on the back label of many of our products we say Preservative-Free (no MIT or BIT). But you may not know what that means... or why it matters, so let’s break it down.
MIT = Methylisothiazolinone and BIT = Benzisothiazolinone
They are both preservatives made from synthetic chemicals and often added to cleaning products (but not ours!) to prevent bacteria and mold growth. They’re effective preservatives, but controversial because they can cause allergic reactions, including skin sensitivities. There are also pet safety concerns.
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Allergic reactions — Even tiny amounts can cause rashes, irritation, or more serious dermatitis for sensitive people.
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Cumulative sensitivity — The more often you’re exposed, the more likely you are to develop a reaction over time. This is why some people suddenly “develop allergies” to a product they’ve used for years.
- Pet Safety Concerns — Cats and dogs lick floors and surfaces, putting them at risk of ingesting the chemicals if they are in the cleaning products you just used.
Are MIT and BIT “Safe”?
Technically: In low concentrations, regulatory bodies (like the EPA and Cosmetic Ingredient Review) say they are safe for use in cleaning products. The amounts used are usually less than 0.01% in a product.
Practically: For people with sensitive skin, allergies, asthma, or autoimmune conditions, they can be problematic even at those low levels. And if you’re using multiple products with these ingredients daily, your risk of developing sensitivity rises over time.
OUR PROMISE
We believe clean should never come at the cost of your health, your pets’s health, or your peace of mind. That’s why we never use MIT, BIT, parabens, phthalates, or any fragrances that hide synthetic preservatives
