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Science-backed hair regrowth insights, expert product reviews, and educational content for effective hair loss solutions. Trusted by readers in the United States and Europe.

Based in the United States — Evidence-based hair loss information following AAD & FDA guidelines.

About the Author

Maya Castillo is a US-based, US-trained hair science writer and research editor specializing in hair growth, scalp health, and evidence-based wellness. She follows AAD (American Academy of Dermatology) guidelines and translates complex scientific research into practical guides to help readers make informed decisions about their hair health.

maya.castillo@besthairregrowth.comLearn more about Maya →

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Natural Remedies

Best Hair Supplements for Thinning Hair in 2025: Backed by Science

Explore the top dermatologist-recommended supplements proven to improve hair growth and reduce shedding in 2025.

D

Dr. Emily Hartman, MD, FAAD

November 2, 2025
November 2, 2025
6 min read
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Published
November 2, 2025
Last updated
Nov 8, 2025
Various hair supplements and vitamins
Various hair supplements and vitamins

Affiliate Disclosure: This article contains affiliate links. We may earn a commission at no extra cost to you.

Essential Nutrients for Hair Growth

Deficiencies in iron, zinc, and vitamin D are strongly linked to hair thinning. A 2023 study in Clinical Nutrition found that correcting deficiencies restored growth rates within 3–6 months.

Best Hair Supplements of 2025

Look for biotin (2,500–5,000 mcg), marine collagen peptides, and saw palmetto extracts. These compounds support keratin production and reduce DHT activity naturally.

Safety Tips

Consult a dermatologist before starting any supplement, especially if you have hormonal or thyroid issues. Consistency for at least 3 months is key to visible results.

Recommended US Products

These evidence-based hair loss treatments are available in the United States and have been reviewed for safety and efficacy:

  • •Rogaine (Minoxidil) - FDA-approved topical treatment
  • •Keeps - Subscription-based hair loss solutions
  • •Hims - Comprehensive hair care products and treatments
  • •Nutrafol - Science-backed hair growth supplements
  • •Vegamour - Plant-based hair wellness products

Always consult with a US-licensed dermatologist or healthcare provider before starting any new treatment. Products mentioned are for informational purposes only.

Have Questions?

Consult with a dermatologist or healthcare provider before starting any new hair loss treatment. Always read labels and follow instructions carefully.

Coming soon...

Table of Contents

  1. 01.Essential Nutrients for Hair Growth
  2. 02.Best Hair Supplements of 2025
  3. 03.Safety Tips

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