Cinnamon for Hair Health: What the Evidence Supports (and What It Doesn’t)

Abstract

Objective

To evaluate whether cinnamon—especially Ceylon cinnamon—offers credible benefits for hair/scalp health and to outline safe, practical use.

Context

Cinnamon contains polyphenols with antioxidant and vasodilatory effects, and cinnamaldehyde may increase local blood flow; however, most evidence is mechanistic or extrapolated from skin data rather than hair growth trials.

Methods Used

Approach

Prioritize scalp barrier protection and irritation avoidance; use low-risk, diluted topical formats and reserve oral dosing for general wellness (not hair growth claims).

Data Collection

Reports of contact dermatitis exist with cinnamon bark/oil; patch testing and low concentrations are essential. Systemic antioxidant benefits from 1–2 g/day Ceylon may indirectly support scalp health.

Researchers' Summary of Findings

Impact on Health

Potential for improved scalp comfort in sensitive or flaky scalps when used correctly; misuse (strong essential oils, non-Ceylon powders) can irritate skin and increase coumarin exposure.

Health Implications

Use only well-diluted topical preparations; avoid broken skin; discontinue if redness or burning occurs; consider oral Ceylon cinnamon in conservative ranges if aiming for systemic antioxidant support.

Sustainability

Choose suppliers that disclose species (C. verum), origin, and coumarin testing to minimize safety variability.

DOI

https://doi.org/10.3390/nu15030700