Mitchum deodorant linked to painful armpit burns and rashes, company says manufacturing change to blame

Dozens of women have reported painful chemical burns, rashes and secondary infections after using Mitchum’s 48-hour roll-on anti-perspirant, prompting an apology from the brand and an investigation into a change in manufacturing.

Users have posted images and accounts on social media platforms, including TikTok and consumer forums, describing burning, stinging and intensely itchy underarm skin that in some cases developed into infected areas requiring antibiotics or antifungal treatment. Some said the reaction occurred after multiple uses of the same bottle rather than on first application.

Mitchum posted a statement on Instagram apologising to customers who experienced adverse reactions and saying the issue was not the product’s intended formula. The company said a change in the manufacturing process of one of its raw materials had altered how the product interacts with the skin in some consumers and that affected batch numbers had been identified and could be refunded.

Social media users described a range of symptoms. One user wrote that the skin became ‘‘angry, red welts’’ and caused such pain she was left in tears. Another said the reaction became so sore she required antibiotics; a different user reported that antifungal cream (Canesten) cured a thrush-like infection following the rash. An account shared with Metro described intense itch and a stinging sensation similar to applying alcohol to dry skin.

Medical experts and dermatologists not involved with the company’s investigation say both irritant and allergic contact dermatitis can appear after topical products and that fragrances and other added ingredients are common culprits. Professor Penny Ward of King’s College London told the Daily Mail that the brand’s newer format includes acetyl cedrene and vanillin, compounds that have been associated with skin irritation in patch testing. She said added fragrances are among the most prevalent allergens in deodorant products.

Irritant contact dermatitis typically occurs on first exposure and causes immediate stinging or discomfort where a substance damages the skin. Allergic contact dermatitis is a delayed immune response that can present as an itchy rash a day or two after exposure and may develop after repeated contact as the immune system recognises the substance as an allergen.

Professor Ward said pain accompanying a rash could indicate secondary infection and might require antibiotic or antifungal treatment. She advised anyone developing a reaction to stop using the product and consult a pharmacist or clinician. In some cases, topical antihistamine or corticosteroid creams can help settle the reaction under professional guidance.

Researchers have previously identified fragrances as a leading source of allergic reaction in deodorants. A Danish study cited by dermatologists found deodorants were a common cause of fragrance allergy, particularly among men, though experts say both sexes can be affected.

Mitchum told customers that the issue relates to a change in a raw material’s manufacturing process rather than the product’s overall formula and that the company completed an investigation identifying impacted batches. The brand apologised for the harm caused and the time taken to reach conclusions. It encouraged affected customers to check batch numbers announced in the statement and seek refunds where eligible.

Health authorities and consumer safety bodies were not named in the company statement in the material provided, and it was not clear whether any formal regulatory recall had been issued. Consumers experiencing severe pain, spreading redness, fever or other signs of infection are advised to seek medical attention.

The reports come amid wider concerns about contact dermatitis from cosmetic and personal-care products, and dermatologists say vigilance is warranted when new formulations or packaging changes are introduced. Mitchum’s announcement followed a wave of social-media reports that users said had been appearing for more than a month, according to posts on TikTok and online forums. The company has invited affected users to check batch information and seek refunds while it addresses the manufacturing issue.