Keratin

What is Keratin?

Keratin is a structural protein that forms the main component of hair, nails, and the outermost layer of skin. It is an important part of our body and plays a crucial role in providing strength and protection against mechanical damage. Keratin is a type of fibrous protein that is resistant to wear, making it indispensable for maintaining our beauty and health.

How does it work in the body?

Keratin is produced by keratinocytes, a type of cell found in the epidermis, the outermost layer of the skin. These cells create keratin through a process called keratinisation. As keratinocytes mature, they become filled with keratin and die, resulting in a strong and protective barrier for the skin. In hair and nails, keratin functions similarly; it provides strength and structure, allowing these parts of the body to withstand external stresses.

Scientific benefits

Research has shown that keratin may have several benefits for the body. Here are some of the scientifically supported advantages:

• Strengthens hair and nails: A study published in the Journal of Cosmetic Dermatology demonstrated that keratin supplements can improve hair growth and reduce hair loss.
• Protects the skin: Keratin plays an important role in maintaining the skin’s barrier function, protecting against harmful substances and moisture loss. Research has shown that keratin-based products can improve skin hydration and elasticity.
• Enhances wound healing: A study in Wound Repair and Regeneration showed that keratin can accelerate wound healing, making it an interesting component in dermatology.

Dosage and recommendations

There is no universal dosage recommendation for keratin, as it may vary depending on individual needs and goals. Generally, a daily dose between 500 mg and 2000 mg is recommended when taken as a supplement. It is important to consult a doctor or dietitian before starting keratin supplementation, especially if you have underlying health conditions.

Best sources and forms

Keratin is naturally found in many foods, especially animal products. Here are some of the best sources:

• Meat (beef, chicken, pork)
• Fish and seafood
• Eggs
• Dairy products (cheese, yoghurt)

Keratin can also be found in various supplement forms, including powders, capsules, and liquids. It is important to choose high-quality products to ensure they contain the amount of keratin stated on the label.

Side effects and warnings

Keratin is generally considered safe for most people when taken at recommended doses. However, some individuals may experience mild side effects such as:

• Gastrointestinal discomfort
• Allergic reactions (especially in those sensitive to animal products)
• Skin rashes

It is always best to consult a healthcare provider before starting a new supplement, especially if you have allergies or other medical conditions.

Frequently asked questions

Is keratin good for hair?

Yes, keratin is good for hair as it strengthens hair strands and can help reduce hair loss and improve hair growth.

Can I get keratin from plant-based sources?

Keratin is an animal protein and is not found in plant-based foods. However, some plant-based supplements may support the body’s natural keratin production.

How long does it take to see results from keratin supplements?

Results may vary, but many people report seeing improvements within 3-6 months of regular keratin supplement intake.

Is it safe to take keratin during pregnancy?

There is limited research on the safety of keratin supplements during pregnancy, so it is best to consult a doctor before taking them during this period.