Generally, no. The IRS treats hair loss treatment as cosmetic, and IRS Publication 502 names hair transplants in its exclusion list outright. The exception: treatment for a diagnosed medical condition, documented with a Letter of Medical Necessity from your clinician. This guide gives the verdict for each treatment and the exact LMN steps.
Hair loss treatment is not HSA-eligible by default. The controlling rule is the cosmetic exclusion in IRS Publication 502:
“Generally, you can't include in medical expenses the amount you pay for cosmetic surgery... cosmetic surgery includes any procedure that is directed at improving the patient's appearance and doesn't meaningfully promote the proper function of the body or prevent or treat illness or disease. Procedures such as face-lifts, hair transplants, hair removal (electrolysis), and liposuction generally aren't deductible.”
The one path that changes the answer: a clinician diagnoses a medical condition (androgenetic alopecia, telogen effluvium) and writes a Letter of Medical Necessity for the treatment. With that letter on file, prescription medication has a defensible claim. Without it, treat the spending as out of pocket.
The cosmetic exclusion applies differently depending on what you buy. Each verdict below uses the same classification as our Hims service-by-service guide and shows the rule each answer comes from.
Treat it as not eligible by default. Finasteride is FDA-approved for androgenetic alopecia, which is the argument for eligibility, but IRS audits historically lean toward the cosmetic exclusion for hair loss. With a prescription plus a Letter of Medical Necessity naming the diagnosis, you have a defensible claim.
Same gray area as finasteride, with one extra wrinkle: minoxidil is sold over the counter, so there is no prescription record backing the purchase. An LMN from your clinician naming the diagnosis carries the whole claim. Without one, treat it as out of pocket.
Not eligible. IRS Publication 502 names hair transplants in the cosmetic-surgery exclusion by name. This is one of the few hair loss questions with a flat answer, and the answer is no.
Platelet-rich plasma sits in the same gray area. The procedure is directed at appearance, which is the exact language of the cosmetic exclusion. An LMN tying it to a diagnosed condition is the only documentation path, and even then this is a harder claim to defend than prescription medication.
Low-level laser therapy devices are FDA-cleared for androgenetic alopecia, which parallels the finasteride argument. The IRS has never addressed them. The cautious position is identical: not eligible without an LMN that names the diagnosis and the device.
Not eligible. Supplements taken for general health do not qualify, and hair-growth blends fall squarely in that bucket. A clinician recommendation does not change this - Pub 502 only allows nutritional supplements when they treat a specific medical condition, and even then the documentation bar is high.
Typical cost: $22-$45/month for medications. The expense page for hair loss treatment covers the documentation requirements in list form.
A Letter of Medical Necessity is the document that moves hair loss medication from the cosmetic bucket to a defensible HSA claim. Here is the full path.
See a clinician (dermatologist, primary care, or a telehealth visit) and get the underlying condition documented. For hair loss the diagnosis is typically androgenetic alopecia or telogen effluvium. Eligibility hangs on a diagnosed medical condition, so this chart note is the foundation of the whole claim.
The letter needs three things: the diagnosis by name, the specific treatment being prescribed or recommended (finasteride, minoxidil, a laser device), and a statement that the treatment is medically necessary for that condition. Clinician signature, credentials, and date complete it.
Keep the LMN in your HSA receipt file alongside the prescription record and every purchase receipt for the treatment it covers. If the IRS ever asks, the letter plus the receipts are the documentation that answers the question.
Pay out of pocket or with your HSA card, then record the expense with its date, amount, and category. Cosmetic add-ons in the same order (shampoos, supplement bundles) stay out of the claim regardless of the LMN.
A ready-to-send letter format for your clinician: diagnosis field, medical-necessity statement, treatment line, and signature block. Enter your email and the download link appears here.
The template is a letter format for your clinician to complete and sign. It is not medical, legal, or tax advice.
Primary source
IRS Publication 502 lists qualified medical expenses under IRC Section 213(d). Read it at irs.gov.
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