What New Hair Dye Testing Reveals About Product Safety—and Why It Matters
Recent independent testing of widely used hair dye products adds new urgency to a growing public health conversation: what consumers are exposed to through everyday beauty routines, and what current systems still fail to address.
Consumer Reports recently tested 23 hair color products—21 boxed dyes and two temporary hair chalks—and found contaminants across every product reviewed. The findings point to a broader issue that extends well beyond any one brand. They highlight persistent gaps in transparency, oversight, and cumulative exposure in the beauty and personal care marketplace.
What Was Tested
The products tested spanned permanent, semipermanent, and temporary hair color categories. Brands included Bigen, Clairol, Dark & Lovely, Garnier, L’Oréal Paris, Madison Reed, Naturtint, Revlon, Schwarzkopf, Arctic Fox, Lime Crime, Manic Panic, Waverlo, Desire Deluxe, and Hally Hair. Each sample was sent to an independent third-party laboratory and tested for volatile organic compounds (VOCs), phthalates, and heavy metals.
The testing itself was informed in part by consumer listening sessions, where participants shared concerns including strong fumes, scalp irritation, and eye irritation associated with at-home hair dye use.
What the Testing Found
The findings were significant.
All 23 products tested positive for dichloromethane, also known as methylene chloride. Consumer Reports notes that this substance is classified as a probable human carcinogen and is generally restricted in cosmetics except in limited applications such as certain hair dye formulations.
The testing also found:
six products contained toluene
four contained DEHP, a phthalate linked to reproductive and other health concerns
one product contained a trace amount of benzene
four products had trace amounts of arsenic
two contained lead
six contained chromium
Just as important, no brand tested was free of all 62 VOCs reviewed in the analysis.
Which Products Stood Out
Several products stood out for especially notable findings.
Waverlo Black Hair Dye Shampoo had the highest total VOCs detected in the testing.
L’Oréal Paris Féria, Downtown Brown contained the highest amount of dichloromethane of all products tested.
Two Revlon ColorSilk Dark Brown products contained the second- and third-highest amounts of dichloromethane.
Madison Reed Radiant Color contained three phthalates, with comparatively high amounts detected.
Hally Pink Shade Stix, a temporary hair color product, contained a trace amount of benzene and also had the second-highest amount of toluene among the products tested.
At the same time, some products performed better on certain measures. Seven dyes had no detectable phthalates: Clairol Root Touch-Up, Dark & Lovely Jet Black, L’Oréal Paris Féria, L’Oréal Paris Magic Root, Naturtint, and both Revlon ColorSilk versions tested.
Why This Matters
These findings matter because hair dye is not an occasional-use product for many consumers. For millions of people, it is part of a recurring beauty routine used over months and years.
Consumer Reports cites expert concern not only about irritation and scalp sensitivity, but also about repeated exposure over time. The article notes that some compounds in permanent hair dye may contribute to DNA damage, inflammation, or hormone disruption, and references research linking long-term use of hair dye with increased health risks, including higher breast cancer risk in some populations.
This is especially important in the context of cumulative exposure. A single use may appear low-risk in isolation. But repeated exposure through products used regularly, over long periods of time, raises a different set of public health questions.
A Systems-Level Issue, Not Just a Product Issue
What these findings ultimately show is that this is not just about one product or one company. It is a systems issue.
Consumers often do not have full visibility into what they are being exposed to. Not all ingredients may be fully disclosed, particularly where fragrance components are involved. Labels such as “clean,” “nontoxic,” “natural,” or “plant-based” are also not tightly regulated and should not be treated as guarantees of safety.
At the same time, there are currently no FDA-mandated limits for VOC content in hair dyes.
That gap matters.
When market-leading brands continue to sell products with substances of concern, and when consumers are left to navigate risk with limited transparency and outdated safeguards, the burden falls too heavily on individuals instead of systems.
What Needs to Change
These findings reinforce the need for:
stronger ingredient transparency
more modern cosmetic safety standards
clearer oversight of cumulative exposure
greater accountability from brands with the resources to lead reformulation and disclosure
Safer beauty cannot depend on consumer guesswork.
Take Action
These findings are a reminder that stronger safety standards and greater transparency are urgently needed across the beauty industry.
You can take action today by:
Read the full Consumer Reports investigation:
https://www.consumerreports.org/health/hair-color-dyes/hair-dye-tests-heavy-metals-vocs-phthalates-a1078498826/
Sign the petition urging L’Oréal Paris to remove these chemical risks:
https://action.consumerreports.org/nb-20260414-hairdye?utm_campaign=nb_20260326_hairdye&utm_medium=email&utm_source=cr
Share the findings with your community to help raise awareness about cumulative exposure and the need for safer products.
Our Position
Safer beauty is a public health issue.
These findings add to a growing body of evidence that current systems are still not designed to fully protect consumers from repeated exposure to harmful substances in beauty and personal care products. Clean Beauty Coalition will continue translating research into public education, advancing accountability, and supporting stronger safety standards that protect people and communities.
Because consumers deserve more than marketing claims. They deserve transparency, accountability, and products that are safer by design.
Newsletter Draft
What This Hair Dye Study Confirms
By Amber Makupson
A new Consumer Reports investigation into hair dye safety confirms something many of us already know instinctively: consumers are being asked to navigate beauty product safety with far too little transparency.
In its recent testing of 23 hair color products, Consumer Reports found contaminants across every product tested. All 23 tested positive for dichloromethane, and several contained additional substances of concern, including toluene, DEHP, arsenic, lead, chromium, and in one case, a trace amount of benzene.
Some of the findings were especially notable. Waverlo Black Hair Dye Shampoo had the highest total VOCs detected. L’Oréal Paris Féria, Downtown Brown contained the highest amount of dichloromethane. Two Revlon ColorSilk products had the second- and third-highest amounts. Madison Reed contained three phthalates with comparatively high amounts detected.
But the biggest takeaway is not about one product.
It is about the system.
This study reinforces what too many consumers, especially frequent users of hair color, have been left to figure out on their own: repeated exposure matters. A product can be normalized, widely available, and heavily marketed while still raising legitimate health questions that deserve deeper scrutiny.
Consumer Reports also makes an important point that often gets lost in beauty marketing: terms like “natural,” “organic,” “ammonia-free,” and even “nontoxic” are not reliable shortcuts to safety. According to the findings, products carrying those kinds of claims were not necessarily safer with respect to heavy metal and VOC contamination.
That matters.
Because consumers should not need a chemistry degree, a legal background, or a deep dive into regulatory loopholes to understand whether the products they use every month may carry health risks over time.
This is why stronger standards matter.
This is why transparency matters.
And this is why public pressure matters.
Large beauty companies have the resources to lead. Regulators have the responsibility to modernize oversight. Consumers deserve full transparency about what is in the products they bring into their homes and apply to their bodies.
If you have followed my work for any amount of time, you already know I believe safer beauty is not a trend. It is a public health issue.
This moment is another reminder that we need:
stronger product transparency
better safety oversight
real accountability from brands
systems that protect consumers before harm becomes normalized
If you want to take action, start here:
Read the full investigation:
https://www.consumerreports.org/health/hair-color-dyes/hair-dye-tests-heavy-metals-vocs-phthalates-a1078498826/
Sign the petition:
https://action.consumerreports.org/nb-20260414-hairdye?utm_campaign=nb_20260326_hairdye&utm_medium=email&utm_source=cr
The beauty industry has evolved in many ways. Product safety standards need to evolve with it.
Because safer beauty should never be left to chance.
