Beard growth is primarily determined by genetics and hormones — specifically testosterone and DHT. You can’t change your genetics, but you can optimize the factors that influence how fast and thick your beard grows. Here’s what actually works.

1. Optimize Testosterone Through Lifestyle

Beard growth is driven by DHT, a derivative of testosterone. While testosterone levels are largely genetic, certain lifestyle factors can help maintain healthy levels:

  • Exercise regularly: Resistance training 3-4 times per week can support healthy testosterone levels
  • Sleep 7-9 hours: Most testosterone is produced during sleep. Inadequate sleep directly lowers testosterone
  • Manage stress: Chronic stress elevates cortisol, which can suppress testosterone production
  • Maintain a healthy body fat percentage: Excess body fat increases the enzyme aromatase, which converts testosterone to estrogen
  • Get enough zinc: Zinc deficiency is linked to low testosterone. Eat oysters, pumpkin seeds, and beef, or consider a zinc supplement

2. Eat a Nutrient-Dense Diet

Hair follicles need specific nutrients to produce hair:

  • Biotin (B7): Found in eggs, nuts, and sweet potatoes. A deficiency can cause hair thinning
  • Vitamins A, C, and E: These support skin and follicle health. Eat colorful vegetables and fruits
  • Protein: Hair is made of keratin. Adequate protein intake provides the building blocks
  • Omega-3 fatty acids: Support skin health and reduce inflammation that can impede follicle function

3. Keep the Skin Underneath Healthy

Beard hair grows from follicles in the skin. If the skin beneath your beard is dry, flaky, or inflamed, growth is impaired:

  • Wash regularly: Use a dedicated beard wash (not regular shampoo or body wash) 2-3 times per week to remove dead skin and oil buildup
  • Exfoliate weekly: Use a gentle face scrub in the beard area to prevent ingrown hairs and keep follicles clear
  • Moisturize with beard oil: Jojoba oil, argan oil, and castor oil hydrate skin and hair, creating an optimal environment for growth

4. Try Minoxidil (With Caution)

Minoxidil (Rogaine) is FDA-approved for scalp hair loss, but many men use it off-label for beard growth. Research from a 2016 study in the Journal of Dermatology showed that 5% minoxidil applied to the face twice daily for 16 weeks significantly improved beard growth in men with patchy beards.

If you try minoxidil, be aware: it requires months of consistent use, results vary by individual, and any new hair may fall out if you stop using it. Consult a dermatologist before starting.

5. Be Patient

Beard hair grows at an average rate of 0.5 inches per month. A full beard takes 2-4 months of uninterrupted growth. Many men give up at the 2-3 week mark when it looks patchy and feels itchy. Push through this phase — most beards fill in significantly by week 6-8.

The Truth About Beard Growth

No supplement, oil, or cream will give you a beard your genetics won’t support. If your father or grandfathers have full beards, you likely will too. If they don’t, you may have slower growth or patchy coverage. That’s okay — not every man can grow a full beard, and there’s nothing wrong with that.

Focus on what you can control: health, nutrition, skin care, and patience. For beard maintenance once you have one, see our beard grooming guide.

This content is for informational purposes only and does not constitute medical advice. Consult a dermatologist before using minoxidil or if you experience unusual hair loss or skin reactions.

Photo: Nenad Stojkovic, CC BY 2.0, via Wikimedia Commons