How Hair Grows: Anagen, Catagen, Telogen & Exogen Hair Phases

How Hair Grows: Anagen, Catagen, Telogen & Exogen Hair Phases

Ever pondered over what’s happening atop your head? We're talking about the mysterious world of hair growth. It's time to untangle the science behind those luscious locks and discover what makes them grow!



  • The hair growth cycle includes four phases: Anagen (growth), Catagen (transition), Telogen (rest), and Exogen (shedding), with the duration of these phases influencing hair length and shedding rates.

  • Understanding the hair growth cycle is essential for effective hair loss treatment, as it allows for targeting specific growth phases and tailoring personalised hair loss treatment plans.

  • Gro emphasises a science-based, personalised approach to hair loss treatment, focusing on comprehensive analysis and education to craft tailored solutions for individual hair growth patterns and health.


The Hair Growth Cycle: A Marvel of Nature

Anagen (Growth Phase):

This is where the magic happens. Hair follicles push out those strands like tiny factories. This phase can last anywhere from 2 to 7 years, and how long it lasts determines how long your hair can grow.

Catagen (Transition Phase):

Think of this as the factory going on a short break. Lasting about 2 to 3 weeks, this phase sees the hair follicle shrink and detach from the dermal papilla (the nutrient source).

Telogen (Resting Phase):

During this 3-month phase, your hair takes a well-deserved rest. At any given time, 10-15% of your hair is just lounging around in this phase.

Exogen (Shedding Phase):

This is when your hair decides it’s time to leave the nest. Don’t fret, though. Losing 50-100 hairs a day is perfectly normal. It's just making room for new hair.

Why Understanding Hair Growth is Crucial for Hair Loss Treatment

Targeting the Right Phase: Effective hair loss treatments hinge on understanding which phase of growth is affected. For instance, treatments like minoxidil aim to elongate the anagen phase.

Personalised Treatments: Knowing your hair growth cycle helps in tailoring treatments. What works for one might not work for another, because, well, hair is as individual as you are.

3. The Gro Clinics Approach: Science Meets Personalisation

At Gro Clinics, we don’t just look at your hair; we delve into the fascinating science behind it. Our approach to hair restoration is rooted in understanding the individuality of your hair growth cycle.

Comprehensive Analysis: We start with a thorough analysis of your hair growth pattern, health, and lifestyle.

Tailored Solutions: Armed with this knowledge, we craft a personalised treatment plan. Whether it’s medical treatment, or a transplant, it’s all about what’s best for your hair.

Education and Empowerment: We believe in empowering you with knowledge. The more you understand about your hair, the better you can care for it.

Understanding the science of hair growth is for anyone who cares about their hair. It’s about getting to the root (pun intended) of hair health and making informed decisions. Whether you’re grappling with hair loss or just curious about your crowning glory, remember: every strand has a story. At Gro, we’re here to help you write that story, one follicle at a time.


Ready to take the next step? We have clinics all around Australia and New Zealand including BrisbaneGold CoastSydneyMelbourne & Perth.

Why not give us a call on 1300 787 563 to start your hair growth journey.

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