Benefits

Does copper bisglycinate help with hair?

Last reviewed: May 2026

The short answer

Copper plays a recognized biochemical role in two aspects of hair: pigmentation (via tyrosinase, a copper-dependent enzyme in melanin synthesis) and connective tissue strength (via lysyl oxidase, which cross-links collagen). Premature graying and hair changes are recognized signs of clinical copper deficiency. Whether copper bisglycinate supplementation produces hair benefits in people who are not deficient is less clear — the direct clinical evidence is limited.

What copper does in hair biology

Hair color is produced by melanocytes in the hair follicle, which synthesize melanin pigments. The rate-limiting step in melanin synthesis is catalyzed by tyrosinase, an enzyme that requires copper at its active site. Inadequate copper status can in principle reduce melanin production, contributing to graying.

Hair structure depends on connective tissue around the follicle. Lysyl oxidase — copper-dependent — crosslinks collagen and elastin in the scalp. Although the hair shaft itself is made primarily of keratin (not collagen), the surrounding tissue that anchors and nourishes follicles is collagen-rich.

What the deficiency evidence shows

Premature graying, hair color changes, and increased hair brittleness or shedding are recognized clinical signs of established copper deficiency, alongside anemia and neutropenia. People with frank copper deficiency who restore copper status sometimes report improvement in hair texture and color, particularly if the changes were recent.

What we cannot conclude

There is no well-designed human trial showing that copper bisglycinate supplementation reverses graying in adults with normal copper status, regrows hair lost to androgenetic alopecia, or substantially improves general hair quality in healthy people. Copper is necessary for these processes, but "necessary" is not the same as "adding more produces a benefit when levels are already adequate."

When copper supplementation is worth considering for hair concerns

• You take high-dose zinc and have noticed hair changes
• You have other signs that may indicate copper insufficiency (fatigue, anemia, frequent infections)
• You eat a restrictive diet low in copper-rich foods (organ meats, shellfish, nuts, seeds, dark chocolate)
• Your physician has tested copper or ceruloplasmin and found values below the reference range

If hair loss is your primary concern, it is worth ruling out the more common causes first — androgenetic alopecia, thyroid dysfunction, iron deficiency, telogen effluvium — with a clinician.

Related questions

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