How Genetics Determine Hair Growth

Why does your hair grow at a different rate than others? It all comes down to genetics. Your hair growth cycle - including the anagen (growth) phase, catagen (transition) phase, and telogen (resting) phase - is largely influenced by your DNA. Understanding how your genetic makeup controls hair growth can help set realistic expectations and guide you in caring for your natural hair texture and length. In this blog, we explore the science behind genetic hair growth patterns and how the hair cycle affects your strands.

Questions You Might Be Asking:

• How long does the hair growth cycle last?

• What is the anagen phase and why is it important?

• Can genetics affect how fast my hair grows?

• Why won’t my hair grow past a certain length?

• How do I make my hair grow?

The Hair Growth Cycle:

Hair growth is a cyclical process comprising three main phases: 

• Anagen (Growth): This active phase sees hair cells dividing rapidly, leading to new hair growth. The duration of anagen is largely genetically predetermined. 

• Catagen (Transition): A short transitional phase where hair growth slows, and the follicle begins to shrink. 

• Telogen (Rest): In this resting phase, the old hair is shed, and the cycle begins anew. Approximately 10-15% of our hair is in telogen at any given time. 

Understanding this cycle unveils the challenge of altering our predetermined genetic growth rate. Genetics largely dictate the duration of the anagen phase, influencing how long our hair can potentially grow. 

Genetic Influence on Hair Growth

Our genetic code plays a pivotal role in determining the rate at which our hair grows. While some individuals are genetically predisposed to faster hair growth, others may experience slower growth due to their unique genetic makeup. This intrinsic factor underscores the importance of embracing the natural growth patterns dictated by our genes. Whilst we can't change our predetermined genetic growth rate, there are some things we can do to aid the process.

Promoting Healthy Hair Growth Naturally:

• Balanced Nutrition: A diet rich in vitamins, minerals, and proteins is vital for optimal hair health. Key nutrients include iron, zinc, biotin, and omega-3 fatty acids. 

• Scalp Health: A healthy scalp provides an optimal environment for hair growth. Regular cleansing, gentle massage, and the use of Trichologist-approved products contribute to scalp vitality. 

• Stress Management: Chronic stress can disrupt the hair growth cycle. Incorporating stress reduction techniques like meditation and yoga can positively impact overall well-being. 

• Avoiding Harmful Practices: Limiting exposure to harsh chemicals, excessive heat styling, and tight hairstyles promotes hair health and minimises damage. 

The Individuality of Hair Growth: A Disclaimed Journey 

It's crucial to acknowledge that while general guidelines exist, the effectiveness of any regimen can vary widely among individuals. Each person's genetic makeup, lifestyle, and overall health contribute to the uniqueness of their hair growth journey. One-size-fits-all advice may not yield uniform results. 

The quest for promoting natural hair growth is an individualised journey guided by genetic predispositions and holistic practices. Our Trichological expertise is a valuable resource for navigating this journey, offering personalised insights and science-backed recommendations

Supporting your child’s unique hair growth journey?

At Rach & Co, launched by the founder of CURLiD, Rachel provides real life guidance, practical tips, and product recommendations tailored to mums raising children with curly, coily, or textured hair. Embrace your child’s natural hair growth patterns with confidence - Rach & Co is here to help every step of the way.