July 17, 2025

Best Supplements for Hair Growth and Thickness: What Really Works According to Science

Struggling with thinning hair or slow growth? This guide reveals the most effective supplements to support scalp health, boost hair thickness, and strengthen strands from the root up.

Best Supplements for Hair Growth and Thickness: What Really Works According to Science

Thinning hair or hair loss can significantly affect one’s confidence and self-image. Whether it's noticing more strands on the pillow or struggling with a stubborn receding hairline, these experiences can be distressing for many. 

While factors like lifestyle, genetics, and hormonal fluctuations often play a role, dietary supplementation can provide a solution by nourishing hair from the inside out. 

At Washington Health & Drug, we specialize in pharmacist-approved, clinically supported supplements that are designed to address these specific challenges. Armed with the right nutrients, you can give your hair the boost it needs for healthier, thicker growth. 

Why Your Hair Needs More Than Just Shampoo 

The Role of Internal Nutrition in Hair Health 

To thrive, hair follicles require a delicate balance of vitamins, minerals, and amino acids. These nutrients are essential for maintaining strong, active follicles that can support steady growth. 

Unfortunately, topical treatments like shampoos or serums cannot address internal nutrient deficiencies, which are often the underlying culprits behind weak or thinning hair. Proper internal care is crucial for lasting improvements. 

Signs You Might Need Hair Growth Supplements 

Noticing changes in your hair health? Consider adding supplements if you experience symptoms such as: 

  • Increased hair shedding or thinning 

  • Slowed hair growth 

  • Brittle or fragile strands prone to breakage 

  • Thinning around the crown or at the hairline 

These signs can often result from gaps in essential nutrients caused by aging, stress, poor diet, postpartum recovery, or hormonal imbalances. By filling those nutritional voids, targeted supplements can help restore vitality to lackluster locks. 

Key Nutrients That Promote Hair Growth and Volume 

Biotin

Biotin, often referred to as the “hair vitamin,” is renowned for its ability to support keratin production. By strengthening weak or thinning hair, biotin plays a key role in improving strand resilience. 

Additionally, biotin supplementation can benefit those dealing with brittle nails or dull skin, making it a valuable addition to any hair-health routine. 

Collagen

Collagen is packed with amino acids that are essential for repairing and maintaining the integrity of scalp tissue and hair follicles. 

Regular collagen intake not only supports hair but also boosts skin elasticity and nail strength, contributing to an overall healthier appearance. 

Vitamin D

Low levels of vitamin D are strongly linked to increased hair shedding and sluggish regrowth. 

This vitamin is especially critical for individuals dealing with autoimmune or inflammatory scalp conditions, as it helps stimulate dormant follicles and revitalize the scalp environment for growth. 

Zinc and Iron

Iron-deficiency anemia, a common condition among women, is a leading cause of hair loss. Adequate iron promotes the flow of oxygen-rich blood to hair follicles, which is vital for their function. 

Meanwhile, zinc regulates oil production and assists with DNA repair in hair follicles, ensuring that they can grow strong and healthy strands. 

Saw Palmetto

For individuals experiencing hair thinning linked to hormonal imbalances, particularly elevated DHT levels, saw palmetto can offer relief. This natural supplement is often included in hair formulas for men and menopausal women who are prone to this type of loss. 

Supplement Combinations That Work Better Together 

Multinutrient Formulas for Hair, Skin & Nails 

Combination supplements designed for hair, skin, and nails take the guesswork out of mixing individual vitamins and minerals. Ingredients like biotin, silica, MSM, and vitamins A, C, and E work synergistically in these formulas to support optimal tissue health. 

Protein + Collagen: Strengthening From the Inside Out 

Pairing protein with collagen ensures that your body has the tools it needs for structure repair and growth. This duo is especially effective for combating hair loss triggered by surgery, stress, or postpartum changes. 

Probiotics for Nutrient Absorption 

A healthy gut is essential for absorbing the nutrients your hair needs to flourish. 

Chronic problems like bloating or IBS can interfere with this process, making probiotics an important addition. They help foster a balanced digestive environment, enhancing vitamin and mineral uptake. 

How Long Do Hair Supplements Take to Work? 

Understanding the Hair Growth Cycle 

Hair growth occurs in phases, and patience is essential when starting supplementation. 

On average, it takes 8–12 weeks of consistent use to see noticeable improvements. Commitment to your regimen is key to achieving the thick, healthy hair you’re striving for. 

When to Seek Professional Help 

If you’ve tried multiple supplements without success, it may be time to seek expert advice. 

At Washington Health & Drug, we offer personalized consultations to help identify potential gaps in your diet or assess internal health factors that could be affecting your hair. 

Strength From Within: Hair Solutions from Washington Health & Drug 

For trusted, pharmacist-approved products that are backed by science, look no further than Washington Health & Drug. We carefully select hair supplements that target thinning, breakage, or slow growth, offering everything from biotin and collagen to advanced DHT-blocking formulas. 

Our featured formula, HairLuxe Plus, is expertly crafted with a precise mix of vitamins, minerals, and plant-based ingredients that work together to encourage natural hair growth. Designed for maximum absorption, this advanced supplement fuels follicles with the essential nutrients needed to enhance texture, resilience, and shine.

Whether you're addressing thinning, dryness, or slow growth, HairLuxe Plus delivers targeted support for healthier, more vibrant hair. Shop today and take the first step toward healthier hair! 

Conclusion: Reclaim Confidence with Stronger, Healthier Hair 

Building a foundation for luscious, resilient hair starts from within. While external products play their part, true transformation lies in providing your body with what it needs to thrive. Supplements like biotin, collagen, and saw palmetto can make a measurable difference when used consistently. 

With support from Washington Health & Drug’s trusted expertise, you can take charge of your hair health and enjoy the confidence that comes with a full, vibrant head of hair. Don’t wait—contact us to explore the best hair growth supplements tailored just for you.