Maca for Hair Growth: Does It Work?

Short answer: There is no reliable human evidence that maca makes hair grow or treats hair loss. Maca has been studied mainly for sexual function, fertility-related measures and menopausal symptoms—not scalp-hair growth. Claims that it balances hormones or nourishes follicles are theoretical and should not be presented as proven benefits.

If hair is thinning or shedding, identifying the type and cause is more useful than adding an unproven supplement. Some forms of hair loss respond best when treatment starts early.

Key takeaways

• No randomized human trial has established maca as a hair-growth treatment.
• Maca research on energy, libido or semen measures does not demonstrate an effect on hair.
• Hair loss may reflect genetics, recent illness, medications, nutritional deficiency, thyroid disease, autoimmune disease or damaging hair practices.
• Minoxidil and several prescription options have substantially better evidence for appropriate types of hair loss.
• Supplements can delay diagnosis and sometimes worsen hair loss when taken in excess.

What is maca?

Maca (Lepidium meyenii or Lepidium peruvianum) is a plant traditionally grown in the Andes. The root is sold as a food powder, gelatinized powder or extract. Products may use yellow, red or black maca and can differ in preparation and concentration.

Clinical studies have focused largely on sexual function and reproductive outcomes. A systematic review of randomized trials found limited evidence for improved sexual function, with too few rigorous studies to reach firm conclusions.^[1]

Does maca help hair growth?

There are no well-controlled human trials showing that oral or topical maca increases hair density, hair count or growth rate. The absence of evidence is especially important because online articles often turn unrelated findings into a hair claim.

For example, a study about semen quality, libido or self-reported symptoms does not show that maca stimulates hair follicles. A 2022 meta-analysis of maca and semen-quality parameters found that the evidence was insufficient and highly uncertain.^[2] Even a genuine reproductive effect would not prove a hair benefit.

Does maca increase testosterone?

Maca is often described as a hormone booster, but human research has not consistently shown that it raises serum testosterone. Some studies report changes in sexual symptoms without corresponding hormone changes. That distinction matters because symptom improvement is not proof of a hormonal mechanism.

Trying to manipulate testosterone is not a sound general hair-growth strategy. Androgen sensitivity contributes to pattern hair loss, and treatment often aims to reduce androgen signaling at the follicle rather than increase it.

Why do people think maca helps hair?

Most claims rely on one of four leaps:

• “It contains nutrients.” A nutrient-rich food does not necessarily correct a deficiency or regrow hair.
• “It supports hormones.” This phrase is nonspecific and does not demonstrate a clinically meaningful hormone change.
• “It improves stress or energy.” Those outcomes do not establish an effect on follicles.
• “It worked for me.” Hair cycles naturally fluctuate, and multiple changes often occur at the same time.

Common causes of hair loss

A dermatologist first determines the pattern because different diagnoses require different treatments. Common possibilities include:

• Male or female pattern hair loss
• Telogen effluvium after illness, surgery, rapid weight loss, childbirth or major stress
• Alopecia areata
• Traction or hair-shaft damage
• Scalp inflammation or infection
• Thyroid disease or iron deficiency
• Medication-related shedding

The American Academy of Dermatology notes that treatment depends on the cause and that early treatment can be important for preventing further loss.^[3]

What treatments have better evidence?

Minoxidil

Topical minoxidil is available without a prescription and can help early hereditary hair loss. It must be used consistently, and visible results commonly take six to twelve months. Benefits gradually disappear after stopping.^[3]

Prescription treatment

Depending on diagnosis, sex, health history and pregnancy potential, a dermatologist may consider finasteride, spironolactone, oral minoxidil or other treatments. A systematic review and network meta-analysis has compared several evidence-based options for androgenetic alopecia, but these treatments have different risks and are not interchangeable.^[5]

Condition-specific care

Patchy alopecia areata, inflammatory scalp disease, infection and scarring hair loss require different care. A supplement marketed for “all hair loss” cannot address those distinctions.

Should you take vitamins for hair loss?

Supplements can help when they correct a genuine deficiency, but unnecessary high doses are not harmless. The American Academy of Dermatology warns that too much selenium, vitamin A or vitamin E has been linked to hair loss.^[4]

A clinician may consider iron studies, thyroid testing or other evaluation based on the pattern, diet and symptoms. Broad testing and supplementation are not necessary for every person.

Maca safety

Short-term studies generally report few serious adverse effects, but the evidence base is small and product quality varies. Pregnancy and breastfeeding safety has not been established. People with thyroid disease or hormone-sensitive conditions should discuss maca with a clinician, especially when using concentrated extracts.

Choose products with transparent ingredients and independent testing. Avoid proprietary blends and claims to cure alopecia, reverse hormonal hair loss or work within a guaranteed timeframe.

When to see a dermatologist

Arrange an evaluation for sudden shedding, round bald patches, scalp pain or inflammation, eyebrow loss, signs of scarring, or progressive thinning that worries you. Bring a list of medications, supplements, recent illnesses, major diet changes and family history.

Frequently asked questions

How much maca should I take for hair growth?

No evidence-based dose exists because maca has not been shown to promote hair growth in human trials.

Can maca stop hormonal hair loss?

There is no evidence that it treats male or female pattern hair loss. The phrase “hormone balancing” is not a diagnosis or a demonstrated treatment mechanism.

Can maca cause hair loss?

Hair loss is not an established common effect, but supplement safety data are limited. New shedding after starting any product should prompt a review of ingredients, dose, timing and other causes.

Is black or red maca better for hair?

Neither has proven superior for human hair growth.

Can maca be applied to the scalp?

There is no established topical maca treatment for hair loss. Applying food powders or untested extracts can irritate the scalp without addressing the cause.

The bottom line

Maca may be an interesting food or supplement, but it is not an evidence-based hair-growth treatment. Its studies on sexual or reproductive outcomes cannot be repurposed as proof for hair. If hair loss is persistent, early diagnosis and a treatment matched to the cause offer a better chance of preserving or regrowing hair.

For more educational content on shedding, scalp health and hair-support ingredients, browse our Hair Health articles.

Sources

1. Shin BC, et al. Maca (L. meyenii) for improving sexual function: a systematic review. BMC Complementary Medicine and Therapies. 2010.
2. Lee HW, et al. Maca (Lepidium meyenii Walp.) on semen quality parameters: a systematic review and meta-analysis. Frontiers in Pharmacology. 2022.
3. American Academy of Dermatology. Hair loss: Diagnosis and treatment.
4. American Academy of Dermatology. Hair-loss treatment tips and supplement cautions.
5. Feldman PR, et al. Hair regrowth treatment efficacy and resistance in androgenetic alopecia: a systematic review and continuous Bayesian network meta-analysis. Frontiers in Medicine. 2023.

Evidence reviewed August 2026. This article is educational and is not a substitute for individualized medical diagnosis or treatment.