What's actually in your braiding hair.
Plain language, every claim sourced. What the material is, what it does, and what we found when we tested our own.
Two industrial chemicals: vinyl chloride (VY-nul KLOR-ide) and acrylonitrile (uh-KRIL-oh-NY-trile).
The WHO's cancer agency classifies both as known human carcinogens. It is the same chemical family used to make pipe, flooring, and shower curtains.
They never put it on the packaging. They were never required to.
What that does to your scalp.
Most braiding hair is made from PVC-based modacrylic, a material never designed for prolonged dermal contact. Under heat, sweat, friction and UV, those surfaces shed plasticizers and chloride compounds that wear down the scalp barrier over time.
No one has measured how much of that reaches the scalp across a full install. That is the reason we ran clinical trials instead of making a claim.
A rinse is not a redesign.
The industry's answer was to normalize the irritation: soak the hair in apple cider vinegar before installation. It is an acid soak at pH 2.5 to 3.5. Your scalp sits closer to 5.
The rinse lifts some surface residue, which is why day one feels better. What the acid does to the fiber itself is undocumented. By week two the same chemistry is back against your scalp.
The problem is not on the surface. It is the material.
We had our fiber tested for the same things.
Consumer Reports tested 40 braiding hair products across human, synthetic, and plant-based hair in 2025, and again in 2026. Every one tested positive for at least one harmful substance. We sent Nourie to SGS for the same categories, 75 analytes across volatile organic compounds and heavy metals including lead and cadmium. None were detected.
The full panel, the report number, and both clinical studies are on the clinical page.
Plain answers.
The questions people ask when they finally start looking for information.
Is bioengineered hair actually different from regular braiding hair?
Completely. Regular braiding hair is plastic, usually a petroleum-based material first made for industrial textiles. Nourie is bioengineered from plant-based materials in a lab and designed to sit against skin. Same braiding, washing, and styling. A fundamentally different material underneath.
Isn't everyone 'clinically tested' now?
It usually means one patch test on a forearm or a back. We ran two studies, one for irritation across 58 people, and one measuring the scalp during actual braided wear. Both are on the clinical page.
So how is Nourie different?
Nourie is not plastic. It is a bioengineered fiber, made from plant-based materials and designed to sit against skin. What that did in testing is on the clinical page.
What about banana hair and plant-based options?
Skipping plastic is not the same as being tested. Consumer Reports included plant-based products in what it tested, and they were not exempt from the findings. Raw plant fibers also tend to be brittle. Nourie is built to do both: tested for what it is made of, and able to behave like hair you can braid, wash, and live in for weeks.
Where to find it.
Nourie is the fiber inside braiding hair sold by other brands, with the testing behind it. To find out which brands carry it, ask us and we will point you to them.