Many women after 40 notice that their hair becomes thinner and weaker, or starts to fall out more. Sometimes the change happens gradually, over several years. Even though the hair care products stay the same, the condition of the hair can begin to change because of processes inside the body.
Most often this is linked to hormonal changes, a lack of nutrients, stress and the body’s natural ageing processes.
In this article we look at why hair loss becomes more common after 40 and which solutions can help support stronger, healthier-looking hair.
How does the hair growth cycle change?
Every hair goes through several phases:
- the growth phase (anagen);
- the transitional phase (catagen);
- the resting and shedding phase (telogen).
In a healthy body most hairs are in the growth phase. Oestrogens help to extend this phase, which is why hair looks thicker and stronger.
During perimenopause oestrogen levels fall, and as a result:
- the hair growth phase becomes shorter;
- more hairs move into the shedding phase;
- hair becomes thinner and weaker.
DHT and follicle miniaturisation: a process that often goes unnoticed
One of the most common causes of thinning hair after 40 is increased sensitivity to DHT (dihydrotestosterone).
DHT is formed from testosterone by the enzyme 5-alpha-reductase. When hair follicles become more sensitive to the effect of this hormone, what is known as follicle miniaturisation begins.
This means that:
- hair gradually becomes thinner;
- its growth phase becomes shorter;
- hair density decreases;
- over time the follicles produce weaker hairs.
It is important to understand that the problem is usually not “too many hormones”. More often it is increased sensitivity of the follicles to the hormonal changes that happen naturally during perimenopause.
This is exactly why women may notice more pronounced thinning even when their blood test results are normal.
Other factors that can make hair loss worse
Hormonal changes often act together with other factors:
A lack of trace elements
A shortage of iron, zinc, selenium or biotin can weaken the hair follicles.
Stress
Raised cortisol levels can shorten the hair growth phase and encourage shedding.
A lack of protein
Hair is mostly made of keratin, so not getting enough protein in your diet can affect its strength.
Thyroid disorders
Changes in thyroid hormones are often linked to thinning hair in women after 40.
Glucose fluctuations
Raised insulin levels can drive hormonal processes that affect the condition of the hair.
Which substances matter to hair follicles?
After 40, what matters to your hair is not only the shine on the outside but also what happens inside the follicle. That is where the strength, thickness and growth cycle of the hair are formed.
Some active ingredients are often used in formulas intended to support hair condition:
- Amino acids (L-cysteine, L-methionine) – important for keratin synthesis;
- Hydrolysed keratin – a more easily absorbed form of keratin;
- Fermented green tea extract – a source of antioxidants;
- Saw palmetto (Serenoa repens) – often associated with supporting 5-alpha-reductase activity;
- Nettle – traditionally used to strengthen hair follicles.
- Zinc – takes part in normal cell renewal processes;
- Selenium – helps protect cells from oxidative stress;
- Copper – important for maintaining pigmentation and hair structure;
The aim of these ingredients is not a “quick effect”. They are intended for long-term support, when the body starts to change at a hormonal level.
Fermented extracts can help the body absorb active substances more easily.
👉 Read more about this:
What are fermented plant extracts →
Everyday habits that can help your hair
- Make sure you get enough protein in your diet.
- Avoid heat-styling your hair at high temperatures too often.
- Do not brush very wet hair.
- Pay attention to sleep and rest.
- Reduce long-term stress.
- Choose a balanced diet.
It is important to understand that the hair growth cycle is slow. Changes are usually noticed only after several months of consistent care.
Frequently asked questions
Is hair loss after 40 normal?
Some thinning is a common symptom of hormonal change. However, heavy or sudden hair loss is not normal and may point to additional causes.
Can hair loss be stopped?
The results depend on the cause. Comprehensive hair care started early can help maintain density and strength.
When can changes be noticed?
The first positive changes are usually noticed after 8–12 weeks, but clearer results may appear after several months.
Find more answers in our FAQ section →
FILLaCELL Hair Rebalance was created for women who want to support stronger, more vibrant-looking hair after 40.
The formula combines:
- amino acids;
- hydrolysed keratin;
- fermented green tea extract;
- saw palmetto;
- nettle;
- zinc, selenium and copper.
Every ingredient was chosen with the changes in a woman’s body and the needs of the hair follicles in mind.
Changes in hair after 40 are often a natural part of hormonal processes.
By understanding what is happening in the body and choosing consistent self-care, women can support stronger, more vibrant and healthier-looking hair at every stage of life.
