CLAIM:
The viral Instagram submit claims that analysis suggests everlasting hair dyes might enhance the chance of breast most cancers by as much as 60%, notably amongst frequent customers. It provides that whereas research present an affiliation slightly than proof of causation, individuals who color their hair usually might take into account decreasing chemical publicity by utilizing gentler merchandise, spacing out remedies and following protected utility practices.
FACT:
Present proof means that everlasting hair dye use could also be related to a small enhance in breast most cancers danger in sure teams, notably frequent customers and a few racial or genetic populations. Nonetheless, there isn’t any conclusive proof that hair dyes instantly trigger breast most cancers, and most obtainable research are observational, displaying affiliation slightly than causation. Consultants say there isn’t any suggestion for the overall inhabitants to cease utilizing hair dyes. They advise that whereas smart precautions corresponding to carrying gloves, guaranteeing good air flow and selecting gentler formulations might assist scale back chemical publicity, these measures are primarily based on normal chemical security ideas slightly than definitive proof that they forestall breast most cancers.
Generally the urge to color your hair comes abruptly – a brand new shade of copper, burgundy, blue or purple can really feel like a contemporary temper, a mode change or a confidence increase. Whereas many individuals know hair dye can have an effect on hair texture, some might wonder if it might additionally have an effect on long-term well being.
In a recent Instagram post by Yelyzaveta Storozhuk, who has 1.68 lakh followers, the submit mentions that, “Analysis means that hair dyes might enhance the chance of breast most cancers by upto 60%.”
The caption of the submit provides that, “Can hair dye enhance the chance of breast most cancers – or is that this only a misunderstanding of the analysis?” It refers to massive epidemiological research, together with the NIH Sister Examine, and states that girls who usually used everlasting hair dye had a barely increased incidence of breast most cancers than those that didn’t dye their hair. The caption additionally notes that some hair dyes include fragrant amines and different chemical compounds that will doubtlessly be absorbed by means of the pores and skin, whereas emphasising that these research present an affiliation, not a cause-and-effect relationship.
The submit additional says that absolutely the enhance in danger stays comparatively small and will rely upon the frequency of use, the kind of hair dye and particular person organic components. It provides that occasional hair dye use is usually thought-about to hold minimal danger, whereas common customers might select to cut back chemical publicity by spacing out remedies, selecting gentler formulation and utilizing gloves and air flow throughout utility.
With some customers commenting, “My mothers 70 she’s been dying her hair since she was a teen goes on common mammograms she’s superb.” Others wrote, “This is the reason I exploit Henna to dye my hair pink.” and “Sadly it’s true. It will get into your bloodstream attempt to do something pure!”
Do hair dyes enhance the possibilities of breast most cancers?
Accessible proof means that everlasting hair dye use could also be related to a small enhance in breast most cancers danger in some teams, notably amongst frequent customers and sure racial or genetic populations. Nonetheless, the findings will not be constant throughout research, and there’s no conclusive proof that hair dyes instantly trigger breast most cancers. Researchers proceed to stress the necessity for additional long-term, high-quality research to raised perceive any potential dangers.
A 2018 meta-analysis reviewed eight case-control research printed between 1980 and 2017 that in contrast breast most cancers danger amongst hair dye customers and non-users. After adjusting for publication bias, the researchers reported that “the adjusted RR for ladies utilizing hair dyes was 1.1885.” They famous that this represented “an 18.8% elevated danger of future improvement of breast most cancers amongst hair dye customers.” Nonetheless, the authors additionally cautioned that “additional work is required to verify our outcomes and make clear potential mechanisms,” concluding that “our findings counsel that publicity to hair dyes might contribute to an elevated breast most cancers danger.”
Additional proof got here from the 2020 NIH Sister Study, a big potential cohort research involving 46,709 girls aged 35–74 years who had a sister with breast most cancers however have been cancer-free at enrolment. Throughout a median follow-up of 8.3 years, researchers recognized 2,794 breast most cancers instances. The research discovered that everlasting hair dye use was related to a forty five% increased breast most cancers danger amongst Black girls and a 7% increased danger amongst White girls. The researchers additionally noticed that “increased danger [was] related to elevated frequency” of straightener use. Total, they concluded that “we noticed a better breast most cancers danger related to any straightener use and private use of everlasting dye, particularly amongst black girls,” including that “these outcomes counsel that chemical substances in hair merchandise might play a task in breast carcinogenesis.” Nonetheless, as an observational research, it couldn’t set up that hair dyes instantly brought on breast most cancers.
In distinction, findings from a 2020 BMJ study have been extra reassuring. Researchers adopted 1.172 lakh girls within the Nurses’ Well being Examine for 36 years to look at the connection between everlasting hair dye use and most cancers danger. The research discovered that “ever customers of everlasting hair dyes had no vital will increase in danger of stable cancers… or hematopoietic cancers general in contrast with non-users.” Equally, the researchers reported no elevated danger for many particular cancers, together with estrogen receptor-positive breast most cancers, progesterone receptor-positive breast most cancers, and hormone receptor-positive breast most cancers. Nonetheless, they did observe that “cumulative dose was positively related to danger of estrogen receptor destructive breast most cancers, progesterone receptor destructive breast most cancers, hormone receptor destructive breast most cancers, and ovarian most cancers.” The authors concluded that “no constructive affiliation was discovered between private use of everlasting hair dye and danger of most cancers and most cancers associated mortality,” whereas noting that the findings associated to sure breast most cancers subtypes and ovarian most cancers “warrant additional investigation.”
Most lately, a 2026 systematic review examined 96 research printed between 1964 and March 2025 on hair dye use and most cancers danger. The evaluate discovered that whereas the proof was inconsistent, some research advised potential associations between hair dye use and most cancers danger, notably amongst frequent, long-term customers and sure inhabitants teams. The authors reported “elevated danger of estrogen receptor + breast most cancers amongst African American girls” and famous that people with gradual acetylator N-acetyltransferase 2 genotypes or CYP1A2 had elevated most cancers danger with dye use. The evaluate additionally discovered that maternal use through the first trimester considerably elevated offspring danger of acute lymphoblastic leukemia, with the chance additional rising if dye use continued throughout lactation. Nonetheless, the authors acknowledged necessary limitations, together with variations in research design, research populations and potential confounding components, and concluded that “there may be proof to counsel potential elevated most cancers dangers for frequent, long-term hair dye use in particular populations.”
What specialists say
Commenting on the declare, Dr Poovamma C U, Lead & HOD – Breast Oncology & Oncoplasty, Aster CMI Hospital, Bengaluru, mentioned the viral submit overstates what the present proof reveals. In accordance with her, whereas some research have reported a better danger of breast most cancers amongst girls who steadily use everlasting hair dyes, the broadly cited “60% enhance” comes from particular subgroup analyses and shouldn’t be interpreted as making use of to everybody who colors their hair.
“Massive observational research, together with the Sister Examine within the US, discovered a modest affiliation between frequent use of everlasting dyes and breast most cancers danger, particularly amongst sure populations,” she mentioned. Nonetheless, she added that many different research have proven weak, inconsistent or no vital associations, and that “even when a relative enhance is reported, the general absolute danger stays small.”
Dr Poovamma emphasised that an affiliation doesn’t imply causation. She defined that a lot of the obtainable proof comes from observational research, which may establish correlations however can’t show that hair dyes instantly trigger breast most cancers. “Many components can affect breast most cancers danger, together with genetics, age, hormonal historical past, way of life, weight problems, smoking and environmental exposures, making it troublesome to isolate the function of hair dye alone,” she mentioned. She additionally famous that hair dye formulations have modified considerably over time, with a number of doubtlessly dangerous chemical substances faraway from fashionable merchandise.
Addressing the declare about chemical substances in hair dyes, Dr Poovamma mentioned that some everlasting hair dyes include fragrant amines and different compounds which have proven carcinogenic potential in laboratory or occupational publicity research. Nonetheless, she defined that commercially obtainable hair dyes at the moment are topic to regulatory oversight, and it stays unclear whether or not the small quantities absorbed by means of the scalp throughout regular use are enough to considerably enhance breast most cancers danger in people. “Whereas some observational research counsel a potential hyperlink between long-term use of everlasting dyes and breast most cancers, there isn’t any clear proof proving that chemical substances in at present authorized business hair dyes instantly trigger breast most cancers,” she mentioned.
Relating to sensible recommendation, Dr Poovamma mentioned there isn’t any suggestion for the overall inhabitants to cease utilizing hair dyes. Nonetheless, individuals who color their hair steadily might select to make use of merchandise with fewer harsh chemical substances or ammonia-free formulations, enhance the interval between dyeing periods, put on gloves throughout utility and guarantee good air flow. She clarified that these measures are primarily based on normal chemical security ideas slightly than definitive proof that they forestall breast most cancers, including that the present scientific proof linking hair dye use and breast most cancers stays inconclusive.
This story is completed in collaboration with First Check, which is the well being journalism vertical of DataLEADS
