Does Keratin Help Hair Growth?

Keratin can help strengthen hair and reduce breakage, but it doesn’t directly trigger new growth. It works by coating the hair shaft with natural protein, improving texture and appearance.

At RootMD, founded by Dr. Ross Kopelman, we focus on dermatologist-developed formulas that go beyond surface smoothing to support real scalp and follicle health.

Understanding Keratin Treatments

What Is Keratin and How It Works

Keratin is a natural protein found in hair, skin, and nails. It helps protect and strengthen hair strands from damage caused by heat styling, chemical exposure, and environmental stress. In salon keratin treatments, synthetic keratin is applied to coat and smooth the hair shaft, resulting in softer and shinier hair.

Keratin treatments work by sealing this protein layer using heat, often through blow drying or a flat iron. This process helps reduce frizz, improves manageability, and gives hair a smoother, straighter appearance. While this improves the appearance of damaged hair, it doesn’t change follicle activity or create new growth.

Keratin Treatment for Straightening and Frizz Control

A keratin treatment for straightening temporarily alters hair texture. It can transform curly hair into smooth, straight hair for several weeks. The process utilizes heat styling tools to lock in proteins, helping to reduce frizz and achieve shiny hair with long-lasting results.

Most treatments, like Brazilian blowouts or other salon keratin treatments, use heat to activate the formula. The results depend on your hair type and maintenance routine. Using sulfate-free shampoo and gentle shampoos and conditioners afterward helps the treatment last longer and keeps hair healthy.

Keratin Benefits and Limitations

Is Keratin Good for Thinning Hair?

Keratin can make thin hair appear fuller by coating strands, giving them extra body. However, it doesn’t directly stimulate hair follicles or promote regrowth. People with thinning hair may notice smoother, stronger strands, but not more density.

For individuals with weak or brittle hair, keratin treatment benefits include fewer tangles, reduced frizz, and better resistance to daily wear. Still, it’s important to use gentle hair products and avoid frequent heat styling to protect the hair’s structure.

Does Keratin Promote Hair Growth or Just Reduce Breakage?

Keratin does not promote new hair growth at the root. Instead, it works by reducing breakage along the hair shaft, which can make hair appear longer over time. This creates the illusion of growth because fewer strands break before reaching their full length.

Dr. Ross Kopelman explains that healthy hair growth depends on the condition of the scalp, hormones, and nutrition. Understanding why hair loss happens helps identify whether keratin or other treatments can actually make a difference. Keratin helps maintain strong strands, but should be paired with scalp care and a balanced routine for lasting results.

How Long Do Keratin Treatments Last

Most keratin treatments last between two and six months, depending on hair type and care habits. Washing hair less often and using sulfate free shampoo helps preserve the smooth, straight look.

Touch-ups may be needed when the effect fades, especially if you frequently use a blow dryer or flat iron. Choosing professional salon keratin treatments ensures even application and helps prevent overprocessing, which can lead to dryness or breakage.

How Much Keratin Should I Take for Hair Growth

Keratin supplements are available, but results vary. Because keratin is a structural protein, most people get enough from a balanced diet with protein sources. Overuse of supplements doesn’t necessarily strengthen hair or speed up growth.

If you’re considering supplements for hair, skin, and nails, consult a dermatologist first. RootMD emphasizes evidence-based care, focusing on external products that support the scalp environment instead of unverified oral keratin doses.

Risks and Side Effects

Does Keratin Treatment Damage Hair?

While keratin treatments can make hair look smoother, the process involves heat and sometimes chemicals that can weaken strands. Repeated exposure to high temperatures or harsh solutions may lead to damaged hair over time.

To minimize damage, use professional products and avoid overusing a flat iron or blow-drying daily. Post-treatment care with sulfate-free shampoo and hydrating conditioners helps maintain balance and protect the hair’s natural structure.

Common Side Effects and Safety for Kids

Some salon keratin treatments release fumes during the heat-sealing process, which can irritate the eyes and scalp. Sensitive individuals may experience dryness or mild itching. These treatments aren’t recommended for children because their scalps are more delicate.

Always check product labels for formaldehyde or related compounds. RootMD supports clean, dermatologist-reviewed formulas that smooth the hair safely without unnecessary chemical exposure.

Keratin vs. Biotin for Hair Growth

Which Is Better, Keratin or Biotin?

Keratin strengthens existing strands, while biotin supports natural growth from within by improving keratin production in the body. The two complement each other: keratin enhances appearance, and biotin supports the hair’s structure at the follicle level.

Choosing between them depends on your goal. If you want a smoother texture and reduced frizz, a keratin treatment for hair can help. If your goal is stronger regrowth and healthier follicles, biotin-based products or diet changes may be more effective.

When to Choose a Regrowth Routine Instead

If hair loss or shedding continues despite smoothing treatments, it’s better to focus on scalp health. A regrowth routine with dermatologist-formulated shampoos and conditioners can target the root cause.

RootMD offers clean, evidence-based hair products designed to strengthen hair without harsh chemicals. Each formula supports scalp balance and long-term resilience for different hair types, from straight hair to curly hair.

Evidence-Based Hair Regrowth Alternatives

DHT-Blocking Shampoos and Serums

DHT-blocking products help prevent hormone-related hair thinning. RootMD’s dermatologist-formulated shampoos and serums include ingredients that support scalp health and help strengthen hair. You can also explore the best shampoo to help hair grow for practical tips on maintaining thicker, healthier strands.

Unlike keratin smoothing, which acts externally on the hair, these formulas work at the scalp level, improving follicle conditions for sustainable regrowth.

Clinically Backed Ingredients for Long-Term Growth

Effective regrowth solutions combine clean ingredients like rosemary oil, saw palmetto, and niacinamide. These actives support scalp circulation and reduce buildup that can block follicles.

RootMD products are free from parabens, sulfates, and harsh fillers. Each product is designed for long-lasting results, helping users maintain shiny hair and thicker strands naturally.

Prescription Options for Advanced Hair Loss

For individuals with advanced hair loss, a medical evaluation is important. Some people may require targeted treatments prescribed by dermatologists. RootMD does not offer prescriptions but focuses on over-the-counter, science-backed products developed under dermatological guidance.

Each RootMD formula aims to create a healthy scalp environment where natural growth can thrive safely and effectively.

Final Takeaway

Combine Keratin With Hair Growth Solutions Safely

Keratin helps smooth and strengthen hair, but should be part of a broader care plan. Combining professional treatments with scalp-focused products supports overall hair health and helps avoid dryness from heat styling.

Consistent hydration, balanced nutrition, and clean, dermatologist-approved products will protect both hair and scalp for better long-term results.

Shop RootMD Hair Growth Solutions

RootMD offers dermatologist-developed shampoos, serums, and hair growth oils specifically designed to promote healthy hair growth. With clinically backed ingredients and formulas safe for all hair types, you can strengthen hair naturally and improve scalp health without harsh chemicals.

Find your best hair care routine today with RootMD – where science and real results meet healthy, confident hair.