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You need to get your recommended daily intake of 2.4 micrograms (mcg) per day (1) from food, oral supplements, or injections
A practical daily stack for hair protection includes a high-quality multivitamin as a baseline, plus additional iron (if ferritin is below 50 ng/mL, under medical supervision), zinc at 15-30 mg with 1-2 mg copper, vitamin D3 at 2,000-5,000 IU depending on baseline levels, biotin at 2,500-5,000 mcg (remembering the thyroid lab caveat), and a B-complex covering B12 and folate
Our products are Third Party Tested and Made in the USA from globally-sourced ingredients in GMP certified facilities.
Gschwandtner, M
Last reviewed: May 31, 2026 Last updated: May 31, 2026 Written by: Jay Hastings, CEO of PlexusDx Jay Hastings is the CEO of PlexusDx, a precision health company focused on genetic testing, blood biomarker insights, and personalized wellness recommendations
It also aids in DNA creation and keeps our nervous system healthy
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