Anagen, Catagen & Telogen Explained: Understanding the Hair Growth Cycle
Every hair on your scalp goes through a natural life cycle. Instead of growing nonstop, each follicle works through a set of stages that decide when hair grows, rests, sheds, and starts growing again.
Getting to grips with these stages helps explain why daily shedding is normal, why regrowth takes time, and why consistency counts when you're following a hair wellness routine.
The Hair Growth Cycle
Hair grows across four distinct phases:
- Anagen (Growth Phase)
- Catagen (Transition Phase)
- Telogen (Resting Phase)
- Exogen (Shedding Phase)
Each follicle runs on its own, which means every strand sits at a different point in the cycle at any given moment.
That's why you naturally lose hair every day even as new hairs keep coming in.
1. Anagen Phase (Growth Phase)
The Anagen Phase is the active growth stage.
During this phase:
- Hair is actively growing.
- Follicles draw nutrients from their blood supply.
- Hair length keeps increasing.
- Hair stays firmly anchored in the follicle.
Anagen is the longest part of the cycle and can run anywhere from 2 to 7 years, depending on genetics and other individual factors.
At any given moment, roughly 85–90% of healthy scalp hairs are in the Anagen phase.
The longer a follicle stays in Anagen, the more time the hair has to grow.
2. Catagen Phase (Transition Phase)
The Catagen Phase is a brief transition period.
During this stage:
- Active growth stops.
- The follicle starts to shrink.
- The hair pulls away from its blood supply.
- The follicle gets ready for the resting stage.
Catagen usually runs 2 to 3 weeks.
Only a very small share of scalp hairs sit 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 stays inactive.
- The existing hair holds in place while the follicle gears up for a new growth cycle.
Telogen generally lasts 2 to 4 months.
Around 10–15% of scalp hairs are typically in the Telogen phase.
4. Exogen Phase (Shedding Phase)
Plenty of people only mention the three main stages (Anagen, Catagen, and Telogen), but most hair specialists also count a fourth phase called Exogen.
During Exogen:
- Older hairs naturally shed.
- New hairs start pushing through from the same follicle.
- The growth cycle begins again.
This is exactly why losing 50–100 hairs a day counts as completely normal.
Why the Hair Growth Cycle Matters
Understanding the cycle helps answer a few questions that come up a lot.
Why Doesn’t Hair Grow Overnight?
Hair grows slowly.
Because each follicle is at a different stage, visible improvements build up gradually over several months rather than all at once.
Why Is Daily Hair Shedding Normal?
Every day, some hairs wrap up the Exogen phase while thousands of others keep growing in Anagen.
Daily shedding is simply part of a healthy cycle.
Why Does Hair Regrowth Take Time?
Healthy growth depends on follicles working through their natural cycle.
That's why consistency matters when you're using hair wellness products or topical hair regrowth treatments.
Factors That Influence the Hair Growth Cycle
A number of factors can shape hair growth, including:
- Genetics
- Age
- Hormonal changes
- Nutrition
- Stress
- Overall scalp health
- Hair care habits
Since everyone is different, no two hair growth cycles line up exactly.
Supporting Healthy Hair
Many people choose to set up a complete hair wellness routine made to support healthier-looking hair through every stage of the cycle.
A routine might include:
- Hair Density Shampoo
- Hair Density Conditioner
- Hair Growth Supplements
- TRIOXIDIL® Hair Support Products
- Minoxidil Hair Regrowth Treatment (where appropriate)
Keeping 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 can last several years.
Is hair shedding normal?
Yes.
Most healthy adults naturally shed 50 to 100 hairs a day.
Why does hair regrowth take months?
Follicles naturally move through growth and resting stages.
Visible improvements take time because each follicle progresses on its own schedule.
Can stress affect the hair growth cycle?
Stress can contribute to temporary increases in shedding for some people.
Does everyone have the same hair growth cycle?
No.
Genetics, age, hormones, and overall health all shape individual hair growth patterns.
Why Choose FOLIGAIN®?
FOLIGAIN® offers advanced hair wellness products made 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 help customers build a complete daily hair wellness routine.
Related Guides
Keep 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 just starting your hair wellness journey or looking to sharpen an existing routine, FOLIGAIN® offers advanced products made to support healthier-looking hair through every stage of the 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®.