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Hair & scalp guide

Menopausal Hair Loss

The Science Behind It & How Idyllic Supports You

Menopausal hair loss is one of the most common yet least talked-about symptoms of perimenopause. As hormone levels begin to shift, the hair growth cycle becomes disrupted, leading to increased shedding, slower regrowth, and finer, weaker strands. Understanding why this happens helps women feel informed, empowered, and supported.

Hormonal Changes During Perimenopause

Hormones influence the hair cycle and scalp in different ways. During perimenopause, changes in oestrogen and progesterone, alongside increased androgen sensitivity, can affect how hair looks and feels.

Oestrogen — The Hair-Protective Hormone

Oestrogen plays a major role in keeping hair thick, shiny, and strong. It:

  • Prolongs the anagen (growth) phase of the hair cycle
  • Improves scalp blood flow, delivering nutrients to follicles
  • Supports collagen production, keeping the scalp healthy and elastic

During perimenopause, oestrogen levels begin to fluctuate and gradually decline. This can mean:

  • Shorter growth phases
  • More hairs entering the shedding phase
  • Finer regrowth
  • Increased dryness and brittleness

This is why many women notice their ponytail feels thinner or their parting looks wider.

Progesterone — The Calming Hormone

Progesterone helps balance the effects of androgens (male-type hormones) in the body. It:

  • Reduces androgen sensitivity
  • Supports healthy sebum production
  • Helps regulate the hair cycle

When progesterone drops — often sharply — women may experience:

  • More sensitivity to androgens
  • Oilier or drier scalp changes
  • Increased shedding
  • Hair that feels weaker or breaks more easily

This hormonal imbalance can make hair thinning feel sudden or unpredictable.

Testosterone & Androgens — The Hidden Influence

Women naturally produce small amounts of testosterone. Normally, oestrogen and progesterone keep its effects balanced. But during perimenopause:

  • Oestrogen decreases
  • Progesterone decreases
  • Androgen sensitivity increases

This can lead to:

  • Thinning around the crown or temples
  • Widening of the parting
  • Slower regrowth
  • Miniaturisation of hair follicles (hair grows back finer)

This pattern is extremely common and often mistaken for stress or ageing when in reality, it’s hormonal.

Why Hair Loss Happens During Menopause

The combination of declining oestrogen, falling progesterone, and increased androgen sensitivity can create a “perfect storm” for hair thinning. The hair cycle becomes shorter, follicles shrink, and the scalp can become more reactive or inflamed.

Other factors also contribute:

Stress and cortisol spikes
Nutrient depletion
Thyroid fluctuations
Poor sleep
Inflammation
Genetics

This is why menopausal hair loss feels so different from normal shedding — it’s multi-layered and deeply hormonal.

How Idyllic Helps Support Menopausal Hair & Scalp Health

Idyllic was created with women’s real experiences at its heart, including our founder’s. Estel went through severe perimenopausal symptoms herself, including noticeable hair thinning, scalp sensitivity, and changes in texture. After struggling to find natural, effective solutions, she used her forensic science background to develop formulations that support the scalp and hair during hormonal change.

Our products help by:

  • Nourishing the scalp with nutrient-rich, cold-pressed oils
  • Supporting follicle strength and density
  • Reducing inflammation and dryness caused by hormonal shifts
  • Encouraging healthy regrowth with consistent use
  • Avoiding harsh chemicals that disrupt the scalp barrier

Every formula is created with science, ethics, and lived experience, designed to help women feel confident, supported, and seen during one of the most transformative stages of life.

How Hormones Change Throughout the Month

Even though perimenopause disrupts the usual cycle, understanding how hormones normally behave helps explain why symptoms feel so intense when those hormones begin to decline.

Below is a breakdown of each hormone, what it does, when it rises and falls, and how those changes affect mood, skin, and hair.

Oestrogen — The Energy, Mood & Hair-Protective Hormone

What Oestrogen Does

  • Supports thick, healthy hair
  • Boosts collagen and skin elasticity
  • Improves mood and emotional stability
  • Supports memory and mental clarity
  • Regulates the menstrual cycle
  • Helps maintain bone strength

How Oestrogen Changes Through the Month

Week 1 (Menstruation)
Oestrogen is low. Women may feel tired, flat, emotional, or sensitive.
Week 2 (Pre-Ovulation)
Oestrogen rises sharply. Women often feel more confident, energetic, social, and mentally sharp.
Week 3 (Post-Ovulation)
Oestrogen dips slightly, then rises again. Mood is usually stable, skin looks clearer, and hair feels stronger.
Week 4 (Pre-Period)
Oestrogen drops suddenly. This drop can trigger PMS symptoms: irritability, low mood, anxiety, cravings, bloating, and fatigue.

How Oestrogen Affects Hair

High oestrogen = longer growth phase, thicker strands. Low oestrogen = shedding, dryness, thinning.

Progesterone — The Calming, Balancing Hormone

What Progesterone Does

  • Balances the effects of testosterone
  • Helps regulate sleep
  • Supports scalp oil balance
  • Reduces inflammation
  • Helps maintain a stable mood

How Progesterone Changes Through the Month

Week 1–2
Progesterone is very low.
Week 3 (Post-Ovulation)
Progesterone rises strongly. Women may feel calmer, sleep better, and feel more emotionally grounded.
Week 4 (Pre-Period)
Progesterone drops sharply. This sudden drop can cause anxiety, irritability, breast tenderness, bloating, and disrupted sleep.

How Progesterone Affects Hair

High progesterone = balanced scalp oils, reduced androgen sensitivity. Low progesterone = increased shedding, oil imbalance, scalp sensitivity.

Testosterone — The Strength & Libido Hormone

Women produce small amounts of testosterone, and it plays a bigger role than most people realise.

What Testosterone Does

  • Supports libido
  • Helps maintain muscle tone
  • Influences energy levels
  • Affects hair follicles (especially on the scalp)

How Testosterone Changes Through the Month

Week 2 (Ovulation)
Testosterone peaks. Women may feel more confident, more energetic, and have a higher libido.
Week 3–4
Testosterone gradually declines.

How Testosterone Affects Hair

When oestrogen and progesterone are high, testosterone is balanced. When they drop (as in perimenopause), testosterone becomes more dominant, leading to:

  • Thinning around the crown
  • Widening parting
  • Slower regrowth
  • Finer strands

What Happens During Perimenopause

During perimenopause, these monthly patterns become irregular, then stop working altogether:

  • Oestrogen becomes unpredictable — sometimes very low, sometimes spiking
  • Progesterone steadily declines
  • Testosterone stays the same, but becomes more powerful because the balancing hormones are missing

This hormonal imbalance causes:

Hair thinning
Mood swings
Anxiety
Hot flushes
Sleep disruption
Skin dryness
Weight changes
Loss of confidence
Feeling “not like yourself”

Many women describe perimenopause as a time when their personality feels like it’s shifting, and that is completely valid.

Idyllic Hair & Skin products are cosmetic hair and scalp care and are not medicines. This page is general information, not medical advice. If your hair loss is sudden, patchy or accompanied by other symptoms, please speak to your GP, pharmacist or a registered trichologist.