Reactive hair loss: what can you do?
Reactive hair loss is sudden and temporary, triggered by a specific factor (stress, fatigue, change of season, childbirth, dieting). It often occurs 2 to 3 months after the trigger and usually resolves on its own.
By the Luxéol team · Reading time: 6 min · Updated on 9 July 2026
Key points to remember
- Reactive hair loss (or telogen effluvium) is sudden and temporary.
- It often appears 2 to 3 months after the triggering factor.
- Common triggers: stress, fatigue, change of season, postpartum, dieting, fever.
- It is most often reversible: address the trigger and support the hair fibre.
- Targeted treatments reduce hair loss: −61% with the spray and −44% with the shampoo*.
- Hair loss that lasts more than 6 months or worsens warrants medical advice.
What is reactive hair loss?
We refer to reactive hair loss — or telogen effluvium — when an event suddenly shifts a large number of hairs into the shedding phase. As a result, a few months later, significantly more hair than usual is lost, often diffusely across the entire scalp. Unlike progressive hair loss, it is temporary and reversible.
What are the causes?
- Intense stress or emotional shock.
- Severe fatigue or overwork.
- A change of season (often autumn).
- The postpartum period (postpartum hair loss).
- A restrictive diet or a deficiency (iron, in particular).
- A fever, illness or procedure.
What can you do in practical terms?
- Address the trigger: rest, stress management, sleep.
- Rebalance your diet (protein, iron, zinc).
- Use targeted treatments that reduce hair loss and strengthen the hair fibre.
- Adopt gentle habits (less heat, gentle brushing).
- Be patient: the cycle rebalances within a few months.
The Luxéol reactive anti-hair loss range
We have developed a range dedicated to reactive hair loss, linked to stress, fatigue or changes of season, whose effectiveness has been measured in a clinical study under dermatological supervision.
Luxéol reactive anti-hair loss range
Shampoo, conditioner, mask and spray enriched with keratin (patented process), to help reduce reactive hair loss and strengthen the hair fibre. Clinical results: −61% hair loss with the spray and −44% with the shampoo*, after 3 months. Sulphate-free, made in France.
When should you seek advice?
Reactive hair loss generally resolves on its own. Consult a doctor or dermatologist if it lasts more than six months, worsens, is accompanied by thinning areas or other symptoms (marked fatigue): an assessment will help rule out a deficiency or another cause.
Frequently asked questions
How long does reactive hair loss last?
Why am I losing my hair 3 months after a shock?
Does hair grow back after reactive hair loss?
Are anti-hair loss treatments effective?
*Clinical studies under dermatological supervision, application 3 times a week for 3 months: Anti-hair loss shampoo −44% hair loss (65 people), Conditioner −26% (36 people), Mask −38% (35 people); Reactive anti-hair loss spray −61% hair loss (53 people, daily use). Individual results may vary. Food supplements are not a substitute for a balanced diet. This article is for information only and does not replace medical advice; in the event of significant or persistent hair loss, consult a healthcare professional.
Sources
- French Society of Dermatology — telogen effluvium.
- Ameli.fr — hair loss: what can you do?
- Luxéol — clinical studies of the reactive anti-hair loss range.
In the same section
