PFAS stands for per- and polyfluoroalkyl substances. They are a family of thousands of synthetic chemicals, and they earned the nickname "forever chemicals" because the carbon fluorine bond that makes them so useful is also one of the strongest bonds in chemistry. They do not readily break down in the environment, and they do not readily break down in you.
Why they ended up in floss
PFAS are extraordinarily good at making things slippery and resistant to sticking. That is why they show up in nonstick cookware, waterproof fabrics, food packaging, and firefighting foam.
It is also why they show up in dental floss. PTFE, the same material used in nonstick pans, is a PFAS compound, and it is used to make floss glide between tight contact points. It works. It works well. That has been the industry answer for a long time.
The question that took longer to ask was what happens when you drag a PFAS coated filament against your gum tissue, which is highly vascular and highly absorbent, every single day for decades.
What research has found
A peer reviewed study published in the Journal of Exposure Science and Environmental Epidemiology examined behaviors associated with PFAS levels in women and found that use of PTFE based floss was associated with higher levels of PFHxS, a specific PFAS compound, in participants' blood.
Association is not proof of causation, and the researchers were appropriately measured about it. But it was enough to move the conversation, and enough that a reasonable person might want to know what their floss is coated in.
What is known about long term exposure
The broader research literature on PFAS exposure is where it gets serious. Federal health agencies including the EPA and the CDC's ATSDR have summarized the current science, and the health outcomes studied in relation to PFAS exposure include:
-
Increased cholesterol levels
-
Changes in liver enzymes
-
Decreased vaccine response in children
-
Increased risk of high blood pressure and preeclampsia in pregnant women
-
Small decreases in infant birth weight
-
Increased risk of certain cancers, including kidney and testicular cancer
-
Effects on thyroid hormone function and immune function
The EPA has moved to regulate certain PFAS compounds in drinking water, which tells you something about how the regulatory posture has shifted.
Because PFAS accumulate in the body and persist for years, the concern is not any single exposure. It is total lifetime load, built from many small daily sources. Your water. Your cookware. Your packaging. Your floss.
You cannot control all of it. You can control this one.
You are not going to eliminate PFAS from your life. Nobody can. But the exposures you repeat every single day, in a place as absorbent as your gum tissue, are the easiest and most obvious ones to remove.
LuvLine pre expanded SoftFloss contains no PFAS, no PTFE, and no BPA. It is not coated in a forever chemical to make it glide. It is engineered to be gentle without one.
It is one small decision, made once, that you stop having to make again.