We all reach for that bright white toilet paper or soft facial tissue without a second thought. But the bleaching process that gives these everyday products their pristine appearance can leave behind chlorinated byproducts, including dioxins and furans—compounds linked to serious health risks, including carcinogenicity.

The Bleaching Process and Chlorinated Byproducts

Traditional pulp bleaching often used elemental chlorine, reacting with organic matter to form persistent pollutants like polychlorinated dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs), collectively known as dioxins. These are highly toxic, bioaccumulative, and classified as known or probable human carcinogens by agencies like the IARC and EPA.

Even with modern shifts to elemental chlorine-free (ECF) methods using chlorine dioxide, trace chlorinated compounds can remain, though at much lower levels. Totally chlorine-free (TCF) processes avoid chlorine entirely.

Studies show that bleached paper products, including toilet paper and tissues, can contain detectable levels of these byproducts, especially in products using recycled or heavily bleached pulp.

Health Risks: Skin Contact, Mucosal Exposure, and Carcinogenicity

Toilet paper and facial tissues come into direct contact with sensitive skin and mucosal areas, potentially allowing absorption of residuals. Dioxins are particularly concerning because they persist in the body and are linked to cancer, reproductive issues, immune suppression, and endocrine disruption.

Formaldehyde, sometimes added for wet strength, is another carcinogen found in some paper products.

Here are key findings from peer-reviewed journal articles on chlorinated byproducts in paper:

1. A study on residual chlorinated compounds in toilet tissue papers found elevated semi-volatile chlorinated organic compounds (SVCOCs) linked to chlorine bleaching, raising concerns for consumer health upon dermal exposure.

2. Research assessing dermal exposure risks to dioxins in bleached paper products (including toilet tissue and facial tissues) concluded that while levels are low in modern products, historical contamination posed potential risks.

3. Analysis of dioxin formation in pulp bleaching showed that transitioning to chlorine dioxide (ECF) significantly reduces but does not eliminate PCDD/F formation compared to elemental chlorine.

4. Investigations into airborne and residual chlorinated dioxins/furans in pulp mills highlighted furan dominance in ECF-bleached products, with implications for end-product contamination.

5. A risk assessment of 2,3,7,8-TCDD (the most toxic dioxin) in consumer paper products from bleached pulp estimated low but non-zero cancer risks from prolonged exposure.

6. Studies on organochlorines from pulp bleaching emphasize that ECF reduces dioxins to near-undetectable levels in well-managed mills, but TCF eliminates the risk entirely.

While modern regulations have drastically lowered dioxin levels in paper products (often to undetectable), sensitive individuals or those using lower-quality brands may still face trace exposure. The vaginal and anal mucosa are highly absorbent, amplifying potential risks from intimate contact.

Safer, Natural Alternatives: Embrace Bamboo

The good news? You can switch to unbleached or TCF bamboo toilet paper and paper towels. Bamboo grows rapidly without pesticides, requires minimal processing, and results in soft, strong products without chlorine bleaching.

These natural brown or off-white rolls avoid dioxins, furans, formaldehyde, and other irritants—gentler on skin, hypoallergenic, and better for the planet.

Brands offering bamboo options often use oxygen or hydrogen peroxide bleaching (TCF), ensuring no chlorinated byproducts.

Making the switch reduces your exposure to potential carcinogens, supports sustainable forestry (bamboo regenerates quickly), and feels just as luxurious. Your skin—and the environment—will thank you.

Why Not to Store Extra Toilet Paper in Your Bathroom 

It's super convenient to stash spare toilet paper rolls right where you need them — tucked under the sink, stacked on a shelf, or piled near the toilet. But that humidity-filled bathroom environment might be quietly ruining your stash. Bathrooms are prone to steam from showers, temperature swings, and trapped moisture, especially in cabinets under the sink where pipes can leak or condense.

The Main Culprit: Moisture and Humidity

Toilet paper is highly absorbent by design — it needs to break down quickly in water to avoid clogging pipes. But that same property makes it vulnerable to airborne moisture in the bathroom. Hot showers spike humidity levels, and if your bathroom isn't perfectly ventilated, that damp air lingers.

Over time, this can cause:

• Fiber breakdown: The paper becomes brittle, yellowed, or weaker, leading to more tears (and frustration) when you use it.
• Warped cardboard cores: The tube inside the roll can deform, making it hard to unroll smoothly.
• Mold or mildew growth: In extreme cases, excess moisture leads to musty smells, spots, or actual mold — definitely not something you want down there.

Other risks include attracting pests like silverfish (they love starchy paper) or picking up airborne bacteria from toilet flushes.

Is It Always a Problem?

Not necessarily. Many people store a few rolls in the bathroom without issues, especially if:

• The bathroom is well-ventilated (exhaust fan running during and after showers).
• Rolls stay in their original plastic packaging.
• You only keep a small supply (like 2-4 rolls) and rotate them quickly.

Experts note that short-term storage is usually fine, and toilet paper doesn't "expire" like food — it can last years if kept dry. But for bulk or long-term extras, the bathroom isn't ideal.

Better Storage Solutions

Move your main stash to a cooler, drier spot:

• Linen closet or hallway cabinet: Ideal humidity (around 30-50%) and easy access.
• Bedroom or laundry room shelf: Elevated, off the floor, and away from steam.
• Sealed bins or containers: Use lidded baskets or plastic totes to protect from dust and minor moisture, even if you must keep some in the bathroom.