Users Report Chemical Burns After Using Popular Mitchum Roll‑On Deodorant; Company Issues Apology

Dozens of women have reported painful armpit rashes, burns and secondary infections after using Mitchum's 48‑hour roll‑on antiperspirant and deodorant, with images and accounts circulating on TikTok and online forums.

Mitchum issued an apology on its Instagram account late Tuesday, saying the issue was not caused by the finished product itself but by a change in the manufacturing process of one of its raw materials that "altered how the product interacts with the skin in some consumers." The company said it had identified affected batch numbers and that customers holding those batches may obtain refunds.

Social media posts, some of which have been shared for more than a month, describe sudden onset of stinging, angry red welts, itching and in some cases symptoms diagnosed by users as secondary infections such as thrush. Several people posted that the reaction developed after multiple uses of the same bottle rather than on first application. Some users reported needing creams and, in at least one account, antibiotics to treat the affected areas.

"It hurt so very badly and happened after a random amount of uses," one user told a national newspaper. "I had been using the same bottle regularly for a while until it happened." Another posted that the product had developed into thrush and that an over‑the‑counter antifungal cream resolved their symptoms.

Medical experts and dermatologists say fragrances and certain additives in topical products are common causes of skin reactions. Professor Penny Ward of King's College London told reporters that the reformulated product includes acetyl cedrene, which has been shown to be an irritant in patch testing, and vanillin, which can also irritate some individuals. "Generally the irritant chemicals are most likely to be those which are the added fragrances," she said. "In general most dermatitis rashes are itchy rather than painful; pain might be an indication of infection and might need treatment with an antibiotic/antifungal cream."

Dermatologists distinguish two common types of contact dermatitis. Irritant contact dermatitis occurs when a substance directly damages or inflames the skin and symptoms often begin immediately, causing stinging or discomfort. Allergic contact dermatitis is a delayed immune response that typically appears a day or two after exposure and causes an itchy rash as the immune system recognizes a specific ingredient as an allergen.

Fragrances are among the most prevalent allergens found in deodorant, studies have shown. A Danish study cited by dermatology literature found deodorants to be a leading source of fragrance allergy, particularly among men, though reactions can affect any user depending on sensitivity and exposure.

Health professionals advise that users who develop redness, pain or itching after applying a topical product stop using it immediately and seek advice from a pharmacist or clinician. Treatment may include topical corticosteroids or antihistamines to reduce inflammation and itch; suspected infections may require antibiotic or antifungal therapy after clinical assessment. Patch testing can help identify a specific allergen if symptoms persist or recur.

Mitchum's statement did not specify the raw material supplier or the exact manufacturing change but said it had completed an investigation and offered refunds for affected batch numbers. The company advised customers with concerns to check batch codes and contact customer service for guidance.

Regulatory authorities typically monitor adverse event reports for personal care products and may investigate clusters of reactions if complaints continue. Consumers who experience severe reactions are advised to seek medical care and report the issue to relevant health or consumer safety agencies in their country.