Hair Growth Cycle: Phases Explained

Running your fingers through your hair and noticing strands fall can feel alarming. In reality, hair naturally moves through a repeating growth cycle of anagen, catagen, and telogen phases. Shedding is part of this cycle, but when the balance between growth and rest phases shifts, visible thinning can begin.

• Hair grows in repeating cycles, not continuously
• Anagen is the active growth phase
• Telogen is the resting and shedding phase
• Stress, nutrition, hormones, and UAE climate can shift the cycle
• Most daily shedding is normal

What Is the Hair Growth Cycle?

Each hair follicle works independently. At any given time, different hairs on your scalp are in different phases of growth.

This cycling allows you to maintain overall hair density even though individual strands fall out regularly. Problems arise when too many follicles shift into the shedding phase at the same time or when the growth phase becomes shorter.

The Three Phases of Hair Growth

Anagen Phase (Growth Phase)

This is the active growth stage. Cells in the hair bulb divide rapidly, pushing the hair shaft upward.

• Lasts 2 to 7 years
• Around 80–90% of scalp hair is in this phase
• Determines maximum hair length
• Shorter anagen phase = thinner or shorter hair over time

Genetics strongly influence how long your anagen phase lasts. However, chronic stress, iron deficiency, hormonal shifts, and inflammatory scalp conditions can shorten it.

In the UAE, long work hours, sleep disruption, and frequent heat exposure may increase oxidative stress, which can influence follicle behavior over time.

Catagen Phase (Transition Phase)

This is a brief transitional stage.

• Lasts about 2–3 weeks
• Hair growth stops
• Follicle shrinks and detaches from the blood supply

Only 1–3% of hairs are in catagen at a given time. It is a natural step between active growth and rest.

Telogen Phase (Resting & Shedding Phase)

This is when the follicle rests before releasing the hair strand.

• Lasts around 3 months
• 10–15% of hairs are in telogen
• Shedding happens at the end of this phase

Losing 50–100 hairs per day is considered within normal limits. In hot climates like the UAE, frequent washing due to sweat and humidity may make shedding appear more dramatic, but the washing itself is not always the cause.

Quick Comparison of the Three Phases

What Is Normal Hair Shedding?

Shedding is different from Hair Loss disorders. When a hair completes telogen, it falls, and a new anagen hair begins growing from the same follicle.

You may notice more shedding:

• During seasonal changes
• After childbirth
• After illness or high fever
• During intense emotional stress
• After crash dieting

Hard desalinated water common in some UAE residential areas may also affect hair texture, making breakage look like shedding. Breakage happens along the strand, while shedding includes the white bulb at the end.

Shedding vs Hair Breakage

Feature | Shedding | Breakage Origin | From root | Along hair shaft White bulb present | Yes | No Main cause | Natural cycle shift | Dryness, damage, heat styling Regrowth | Usually yes | Depends on damage

Air conditioning dryness combined with high outdoor humidity creates repeated expansion and contraction of the hair shaft, which increases fragility.

What Regulates the Hair Growth Cycle?

Hair growth is influenced by multiple internal and external factors.

Hormones

• Androgens influence pattern hair loss in men and women
• Thyroid imbalance can disrupt cycle timing
• Postpartum hormone shifts can push more hairs into telogen

Nutrition

Hair follicles are metabolically active. They need:

• Iron
• Protein
• Vitamin B12
• Vitamin D
• Zinc

Low-protein diets or restrictive eating patterns can shorten the anagen phase.

Stress & Sleep

Chronic stress raises cortisol. Elevated cortisol can prematurely shift follicles from anagen into telogen, leading to diffuse shedding called telogen effluvium.

Shift workers in the UAE often experience irregular sleep, which disrupts hormonal rhythms linked to growth cycles.

Scalp Health

Inflammation, dandruff, or fungal overgrowth can interfere with healthy follicle function. Excess sweating in humid conditions may aggravate scalp imbalance if not cleansed properly.

When Does the Hair Cycle Become a Problem?

Hair cycling becomes concerning when:

• Shedding continues beyond 6 months
• Hair density visibly reduces
• The part line widens
• Bald patches appear
• There is scalp pain or burning

Gradual miniaturization of hair strands, especially around the crown or hairline, may indicate pattern hair loss rather than temporary shedding.

If shedding feels excessive or sudden, consulting a dermatologist in the UAE can help identify underlying triggers such as anemia, thyroid issues, or hormonal imbalance.

How to Support a Healthy Hair Growth Cycle

Supporting the cycle means supporting the follicle environment.

• Eat adequate protein daily
• Maintain iron and B12 levels
• Manage stress through movement or breathing practices
• Protect scalp from harsh sun exposure
• Use gentle cleansing suited to your scalp type
• Avoid excessive heat styling

Consistency matters. Hair cycles move slowly, so visible changes take months, not weeks.

A Root-Cause Approach: Traya's Perspective

Hair fall rarely has a single cause. Stress, hormonal shifts, nutrient gaps, scalp inflammation, and genetics often overlap. That is why focusing only on oiling, only supplements, or only topical treatments may not address the full picture.

Company["Traya","hair care brand india"] takes a three-science approach:

Ayurveda focuses on internal balance, digestion, sleep quality, and stress regulation. Dermatology provides evidence-based scalp care guidance. Nutrition addresses deficiencies such as iron, B12, protein, and micronutrients.

Plans are personalised based on age, stage of hair thinning, medical history, lifestyle, and environmental exposure, including UAE-specific factors like hard water, heat, and irregular schedules.

The first step is understanding your root triggers. The Traya Hair Test can help individuals assess possible contributing factors. Results vary based on consistency, biology, and overall health patterns.

Frequently Asked Questions

How long does the hair growth cycle last?

The full cycle varies per hair strand.

• Anagen can last 2–7 years
• Catagen lasts a few weeks
• Telogen lasts about 3 months

Each follicle cycles independently.

Is it normal to lose hair every day?

Yes. Losing 50–100 hairs daily is common. Washing may make it look like more because loose telogen hairs come out together.

Why does hair shedding increase during stress?

Stress hormones like cortisol can shift follicles from growth (anagen) into resting (telogen). Shedding usually appears 2–3 months after the stressful event.

Does UAE heat cause hair loss?

Heat alone does not directly cause permanent hair loss. However, sun exposure, sweat, dehydration, and scalp irritation may weaken hair shafts and disrupt scalp balance.

Can the anagen phase be extended naturally?

Supporting nutrition, managing stress, and maintaining scalp health may help optimize the growth phase. Genetics still play a major role.

How do I know if my hair loss is serious?

Warning signs include:

• Visible thinning
• Receding hairline
• Bald patches
• Shedding lasting more than 6 months

A dermatologist can help assess underlying causes.

Does hard water affect the hair growth cycle?

Hard water does not directly stop growth, but mineral buildup can make hair brittle and prone to breakage, which reduces visible volume.