Is it possible to be allergic to minoxidil? What reactions would happen if one is allergic?

Lesions like acne? Or rash?

Doctor Answers 5

Minoxidil can cause allergic contact dermatitis, similar to poison ivy

Minoxidil solution is well known to cause allergies due to an ingredient propylene glycol. The foam does not contain this ingredient so it is less likely to cause allergies, but both products are safe in the majority of people. These products also have ingredients like fragrances and preservatives that can cause allergic dermatitis but those are also not common. If you are allergic to a topical product it produces a rash much like poison ivy that is red, crusty, itchy, and possibly blistered.  The more you use it, the worse the rash will get.  When you stop, the rash would go away. See a dermatologist for evaluation. They may do patch testing to verify if you have an allergy.


San Antonio Dermatologist
5.0 out of 5 stars 5 reviews

Minoxidil can cause allergic contact dermatitis, similar to poison ivy

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Minoxidil solution is well known to cause allergies due to an ingredient propylene glycol. The foam does not contain this ingredient so it is less likely to cause allergies, but both products are safe in the majority of people. These products also have ingredients like fragrances and preservatives that can cause allergic dermatitis but those are also not common. If you are allergic to a topical product it produces a rash much like poison ivy that is red, crusty, itchy, and possibly blistered.  The more you use it, the worse the rash will get.  When you stop, the rash would go away. See a dermatologist for evaluation. They may do patch testing to verify if you have an allergy.


San Antonio Dermatologist

Possible Minoxidil Allergy and hair loss treatment options: hair transplant, prp and progesterone

It is possible, but not that common. This needs an in-person evaluation.  I recommend getting a formal evaluation with a hair loss expert. There are great non-invasive options like prp/progesterone and/or hair transplantation. See an expert. Best, Dr. Emer 

Jason Emer, MD
Los Angeles Dermatologic Surgeon
4.8 out of 5 stars 203 reviews

Possible Minoxidil Allergy and hair loss treatment options: hair transplant, prp and progesterone

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It is possible, but not that common. This needs an in-person evaluation.  I recommend getting a formal evaluation with a hair loss expert. There are great non-invasive options like prp/progesterone and/or hair transplantation. See an expert. Best, Dr. Emer 

Jason Emer, MD
Los Angeles Dermatologic Surgeon
4.8 out of 5 stars 203 reviews

Allergic reaction to minoxidil

It is possible to be allergic to any product, including Minoxidil but this is pretty uncommon with the foam formulation. Minoxidil comes as a solution or a foam. The solution has a preservative ingredient in it (propylene glycol) which can commonly cause scalp reactions such as itching, flaking, irritation. The foam version of minoxidil does not contain this ingredient and patients tolerate it quite well. If you are using minoxidil solution, I would try switching to the foam version. if you are still experiencing these problems while using minoxidil foam, then you may just want to discontinue using minoxidil.

Allergic reaction to minoxidil

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It is possible to be allergic to any product, including Minoxidil but this is pretty uncommon with the foam formulation. Minoxidil comes as a solution or a foam. The solution has a preservative ingredient in it (propylene glycol) which can commonly cause scalp reactions such as itching, flaking, irritation. The foam version of minoxidil does not contain this ingredient and patients tolerate it quite well. If you are using minoxidil solution, I would try switching to the foam version. if you are still experiencing these problems while using minoxidil foam, then you may just want to discontinue using minoxidil.

Can one be allergic to minoxidil?

It is possible albeit not that common. Patients get intense redness and sometimes blisters. It can be painful! See a dermatologist to differentiate irritation from allergy and other causes of scalp redness and flaking, including seborrheic dermatitis and psoriasis.

Can one be allergic to minoxidil?

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It is possible albeit not that common. Patients get intense redness and sometimes blisters. It can be painful! See a dermatologist to differentiate irritation from allergy and other causes of scalp redness and flaking, including seborrheic dermatitis and psoriasis.

Allergic reactions to minoxidil?

Thank you for your question.  Allergic reactions are theoretically possible with just about any medication, cream, cosmetic, or toiletry product.  Some patients do experience allergic reactions to topical minoxidil (or one of the other, inactive ingredients in the solution) - this typically manifests as an itchy rash on the scalp and around the hairline.  It's also important to note that, much more commonly, minoxidil can cause an exacerbation of seborrheic dermatitis and dandruff, which can also result in an itchy scalp.  I hope this helps.   

Faiyaaz Kalimullah, MD, FAAD
Chicago Dermatologic Surgeon
5.0 out of 5 stars 7 reviews

Allergic reactions to minoxidil?

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Thank you for your question.  Allergic reactions are theoretically possible with just about any medication, cream, cosmetic, or toiletry product.  Some patients do experience allergic reactions to topical minoxidil (or one of the other, inactive ingredients in the solution) - this typically manifests as an itchy rash on the scalp and around the hairline.  It's also important to note that, much more commonly, minoxidil can cause an exacerbation of seborrheic dermatitis and dandruff, which can also result in an itchy scalp.  I hope this helps.   

Faiyaaz Kalimullah, MD, FAAD
Chicago Dermatologic Surgeon

These answers are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.