August 5, 2025
3min
Hair density — the amount of hair per square inch of scalp — plays a major role in how thick or thin your hair appears. But did you know your density is not just about genetics? It’s heavily influenced by your hair growth cycle, which affects how many hairs are actively growing at a given time. Whether you’re trying to improve thinning hair, planning a hair transplant, or simply learning more about hair science, understanding these cycles is key.
Human hair grows in cyclical phases, which means each strand on your head is in a different stage of growth at any given moment. The cycle consists of four main phases:
The Anagen phase is the most active part of the hair growth cycle, where hair follicles are in full production mode. During this phase, your hair grows continuously from the root, and the length of time a hair remains in this stage determines its final length. Genetics, hormones, and age can influence how long this phase lasts, which is why some people can grow longer hair than others.
The Catagen phase is a short transitional period that signals the end of active hair growth. In this stage, the hair follicle begins to shrink and detaches from the blood supply, essentially preparing the hair for rest. Although brief, it is an essential step in the hair’s lifecycle.
Telogen is the resting phase of the hair cycle. At this point, the hair is not actively growing but remains anchored in the follicle while the new hair underneath begins forming. External factors like stress or poor nutrition can cause more hairs to enter this stage prematurely, often leading to noticeable hair thinning.
The Exogen phase is considered an extension of the Telogen phase and is when the hair is finally released from the scalp and falls out. It’s completely natural to shed 50–100 hairs per day during this phase. New hairs simultaneously begin to grow, ensuring the cycle continues smoothly.
“Healthy hair doesn’t happen by chance — it’s rooted in science. Understanding your hair growth cycle is the first step to lasting results.”
Hair density refers to how many individual hair strands grow per square inch of your scalp. It plays a significant role in how full and thick your hair appears. While genetics often set the foundation, several internal and external factors influence how dense or sparse your hair looks over time. Understanding these factors can help you make smarter choices for maintaining or improving your hair health.
Even though some factors like genetics are beyond our control, many others — such as nutrition, hormones, and daily habits — are within your reach. With the right care and professional guidance, you can support a fuller, healthier head of hair over time.
At Berkeley Hair Clinic, we consider your natural hair cycle when planning transplants. Grafts are placed strategically into areas where the follicular environment is ready to support new growth. Post-transplant, it’s normal to experience shedding (shock loss) before the new hair begins to grow in sync with your natural cycle.
At Berkeley Hair Clinic, we consider your natural hair cycle when planning transplants. Grafts are placed strategically into areas where the follicular environment is ready to support new growth. Post-transplant, it’s normal to experience shedding (shock loss) before the new hair begins to grow in sync with your natural cycle.
Hair density isn’t just a matter of luck — it’s a reflection of what’s happening beneath the scalp. By understanding and supporting your hair’s natural growth cycle, you can take smart steps to improve its appearance and health. Whether you’re looking for non-surgical support or considering a hair transplant, Berkeley Hair Clinic’s team of experts will help you navigate your options with confidence.
Beard Transplant
August 5, 2025
Senior Hair Transplant technician
Maria has been in the hair transplant industry for 15 years and has the responsibility of ensuring we have the best possible results while adhering to the highest safety standards.
Clinical Consultant
Deanna has over 5 years of experience in hair restorations, having been the clinic manager of a renowned clinic in Sydney, Australia, and now serves as one of our senior clinical consultants. Deanna has a background in pharmaceuticals, being a professional Pharmacist, having undertaken her Master of Pharmacy degree in Birmingham. This training brings her a deep understanding of scalp health, hair loss treatments and surgical restoration options, and this extensive knowledge and experience enables her to guide her patients through every step of their journey with confidence and medical understanding. Known for her detailed consultations and evidence based advice, Deanna combines medical insight with personalised patient centred care. She is dedicated to helping individuals make informed decisions and achieve natural, long lasting results in their hair restoration goals.