Anagen, Catagen & Telogen Explained: Understanding the Hair Growth Cycle
Every hair on your scalp follows a natural life cycle. Rather than growing continuously, each hair follicle moves through a series of stages that determine when hair grows, rests, sheds, and begins growing again.
Understanding these stages helps explain why daily hair shedding is normal, why hair regrowth takes time, and why consistency is important when following a hair wellness routine.
The Hair Growth Cycle
Hair grows in four distinct phases:
- Anagen (Growth Phase)
- Catagen (Transition Phase)
- Telogen (Resting Phase)
- Exogen (Shedding Phase)
Each individual hair follicle operates independently, which means every strand of hair is at a different stage of the cycle at any given time.
This is why you naturally lose hair every day while new hairs continue to grow.
1. Anagen Phase (Growth Phase)
The Anagen Phase is the active growth stage.
During this phase:
- Hair is actively growing.
- Hair follicles receive nutrients through their blood supply.
- Hair length increases continuously.
- Hair remains firmly attached to the follicle.
The Anagen phase is the longest part of the cycle and may last anywhere from 2 to 7 years, depending on genetics and other individual factors.
At any given time, approximately 85–90% of healthy scalp hairs are in the Anagen phase.
The longer a follicle remains in Anagen, the longer the hair has the opportunity to grow.
2. Catagen Phase (Transition Phase)
The Catagen Phase is a short transition period.
During this stage:
- Active hair growth stops.
- The follicle begins shrinking.
- The hair separates from its blood supply.
- The follicle prepares for the resting stage.
Catagen usually lasts 2 to 3 weeks.
Only a very small percentage of scalp hairs are in this phase at any given time.
3. Telogen Phase (Resting Phase)
The Telogen Phase is the resting stage.
During this phase:
- Hair no longer grows.
- The follicle remains inactive.
- The existing hair stays in place while the follicle prepares to begin a new growth cycle.
Telogen generally lasts 2 to 4 months.
Approximately 10–15% of scalp hairs are typically in the Telogen phase.
4. Exogen Phase (Shedding Phase)
Although many people only refer to the three main stages (Anagen, Catagen, and Telogen), most hair specialists also recognize a fourth phase known as Exogen.
During Exogen:
- Older hairs naturally shed.
- New hairs begin emerging from the same follicle.
- The growth cycle starts again.
This is why losing 50–100 hairs each day is considered completely normal.
Why the Hair Growth Cycle Matters
Understanding the hair growth cycle helps explain several common questions.
Why Doesn’t Hair Grow Overnight?
Hair grows slowly.
Because each follicle is at a different stage, visible improvements happen gradually over several months rather than immediately.
Why Is Daily Hair Shedding Normal?
Every day, some hairs naturally complete the Exogen phase while thousands of other hairs continue growing in the Anagen phase.
Daily shedding is simply part of a healthy cycle.
Why Does Hair Regrowth Take Time?
Healthy hair growth depends on follicles completing their natural cycle.
This is why consistency is important when using hair wellness products or topical hair regrowth treatments.
Factors That Influence the Hair Growth Cycle
Several factors can influence hair growth, including:
- Genetics
- Age
- Hormonal changes
- Nutrition
- Stress
- Overall scalp health
- Hair care habits
Because every individual is different, no two hair growth cycles are exactly the same.
Supporting Healthy Hair
Many people choose to establish a complete hair wellness routine designed to support healthier-looking hair throughout every stage of the hair growth cycle.
A routine may include:
- Hair Density Shampoo
- Hair Density Conditioner
- Hair Growth Supplements
- TRIOXIDIL® Hair Support Products
- Minoxidil Hair Regrowth Treatment (where appropriate)
Building a consistent routine helps support overall hair and scalp wellness.
Frequently Asked Questions
Which stage lasts the longest?
The Anagen (Growth) Phase is the longest stage and may last several years.
Is hair shedding normal?
Yes.
Most healthy adults naturally shed 50 to 100 hairs each day.
Why does hair regrowth take months?
Hair follicles naturally cycle through growth and resting stages.
Visible improvements require time because each follicle progresses independently.
Can stress affect the hair growth cycle?
Stress may contribute to temporary increases in hair shedding for some individuals.
Does everyone have the same hair growth cycle?
No.
Genetics, age, hormones, and overall health all influence individual hair growth patterns.
Why Choose FOLIGAIN®?
FOLIGAIN® offers advanced hair wellness products designed to support healthier-looking hair and scalp wellness.
Our collection includes:
- Hair Density Shampoo
- Hair Density Conditioner
- TRIOXIDIL® Hair Support Products
- Hair Growth Supplements
- DHT Support Products
- Minoxidil Hair Regrowth Treatments
Together, these products help customers build a complete daily hair wellness routine.
Related Guides
Continue learning with these expert resources:
- Hair Growth Timeline
- Hair Loss Facts
- Hair Shedding
- What Is Minoxidil?
- What Is TRIOXIDIL®?
- DHT Explained
- Hair Care Routine
- Best Hair Regrowth Products
Explore FOLIGAIN® Hair Wellness
Whether you’re beginning your hair wellness journey or looking to improve your existing routine, FOLIGAIN® offers advanced products designed to support healthier-looking hair through every stage of the hair growth cycle.
Explore:
- Hair Density Shampoo
- Hair Density Conditioner
- TRIOXIDIL® Hair Support Products
- Hair Growth Supplements
- DHT Support Products
- Minoxidil Hair Regrowth Treatments
Build a complete hair wellness routine with FOLIGAIN®.