Turmeric for Hair and Scalp: What the Research Shows

Turmeric and its main compound, curcumin, are widely sold for skin and scalp use. We found no trial showing that turmeric grows hair. What exists is a systematic review of skin effects, a safety review, and a recent dermatology letter reporting liver toxicity with turmeric supplements taken for hair loss.

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Key Takeaways

• We found no human trial of turmeric or curcumin for hair growth.
• A systematic review of 12 studies found Curcuma species affected skin moisture, psoriasis lesions and radiodermatitis, and one reported reduced axillary hair growth.
• A safety review found curcumin safe at up to 6 g a day for 4 to 7 weeks in human studies, with gastrointestinal upset possible.
• A 2026 letter in the Journal of the American Academy of Dermatology describes liver toxicity as a rare side effect of turmeric supplements used for hair loss.

What Is Turmeric?

Turmeric (Curcuma longa) is a spice. Curcumin, its major constituent, is the compound most supplements are standardized to.

Does Turmeric Help Hair?

Not shown. The skin research doesn't establish effects on scalp hair, and one trial in the review found less hair growth, not more, in a body area.

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Using Turmeric Sensibly

• Cooking use is different from concentrated supplements. The safety concerns relate to supplements.
• Stop and see a doctor if you develop symptoms such as stomach upset while taking it.
• Tell your doctor you take it, especially if you have a liver condition or take medicines.

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What The Research Shows

Skin Effects

A systematic review followed PRISMA guidelines and found 12 studies from the past 10 years of Curcuma species and curcumin on skin. Reported effects included antioxidant and anti-inflammatory activity, increased skin moisture, benefit in psoriasis lesions and radiodermatitis, and reduced axillary hair growth. The authors said more human trials are needed to establish delivery methods and dosages (Barbalho et al., 2021).

General Safety

A review of turmeric and curcumin safety concluded that human studies did not show toxic effects, and that curcumin was safe at 6 g a day orally for 4 to 7 weeks. It noted that gastrointestinal upset may occur, and that there are still few trials (Soleimani et al., 2018).

Liver Toxicity Report

A 2026 letter in the Journal of the American Academy of Dermatology is titled "Liver toxicity, a rare side effect of using turmeric supplements for hair loss" (Paz et al., 2026). The abstract wasn't available to us, so we can only report what its title says: that liver toxicity is a rare side effect of turmeric supplements used for hair loss.

See also: Niacin for Hair: What the Research Shows · Hair Density: What It Is and How It Changes

Turmeric (curcumin) is one of the ingredients in FullyVital's Hair Revival Serum and Hair Revival Supplements. For how the evidence for each ingredient in the line stacks up, see our evidence-tier breakdown.

Frequently Asked Questions

Does turmeric help hair growth?

We found no trial showing that.

Is turmeric safe?

General safety reviews found it well tolerated at studied doses, but a recent letter reports rare liver toxicity from supplements. Check with your doctor.

Is turmeric good for the scalp?

The skin research is on other body areas. We found no scalp trial.

References

1. Barbalho SM, de Sousa Gonzaga HF, de Souza GA, et al. Dermatological effects of Curcuma species: a systematic review. Clin Exp Dermatol. 2021. PubMed
2. Soleimani V, Sahebkar A, Hosseinzadeh H. Turmeric (Curcuma longa) and its major constituent (curcumin) as nontoxic and safe substances: Review. Phytother Res. 2018. PubMed
3. Paz M, Ezzat RZ, Kreytak C, et al. Liver toxicity, a rare side effect of using turmeric supplements for hair loss. J Am Acad Dermatol. 2026. PubMed