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Discover our analyses and expert opinions on hair health issues in general and hair loss and hair care in particular (greasy hair, fine hair, electric hair, brittle hair, dry hair, dull hair, dandruff and irritation...). Complex issues that concern us all, whatever our hair type. If you have any questions, you can reach our specialists on +33 (0)1 42 61 28 01.

  • Hair structure: what are the dermal papillae used for?

    Hair structure: what are the dermal papillae used for?

    Dermal papillae, although tiny and often overlooked, are crucial components of hair structure. Nestling at the heart of the hair follicle, they play a decisive role in hair growth and health. These structures feed the...
  • Melanin: the role of this pigment in our hair

    Melanin: the role of this pigment in our hair

    Melanin, a pigment naturally present in our bodies, is the main ingredient in hair colour. It comes in different shades, dictating the vast palette of hair colours, from the darkest to the lightest. Beyond...
  • How can I reduce excess sebum in my hair?

    How can I reduce excess sebum in my hair?

    Excess sebum in the hair is a common problem. While a certain amount of sebum is essential for maintaining healthy hair and scalp, too much can lead to cosmetic problems and discomfort. Find out more...
  • Moisturising hair: what role does the hydrolipidic film play?

    Moisturising hair: what role does the hydrolipidic film play?

    Moisturising hair is essential for maintaining its health, shine and suppleness. At the heart of this process is the hydrolipidic film, a thin protective layer that covers the scalp and hair shafts. This natural barrier...
  • Trichotillomania: causes and treatments

    Trichotillomania: causes and treatments

    Trichotillomania is a disorder characterised by an irresistible and recurrent urge to pull out one's own hair, often leading to significant hair loss and distress. Linked to anxiety and stress, it oscillates between...
  • What is hair fibre?

    What is hair fibre?

    The hair fibre is the scientific term for what we commonly call hair. It is the product of a complex biology and the reflection of our health. Each hair is made up of several layers that work together to...
  • Hydrogen peroxide for hair: good or bad idea?

    Hydrogen peroxide for hair: good or bad idea?

    The use of hydrogen peroxide in hair care is a subject that raises many questions. Commonly used to bleach or lighten hair, this chemical substance, also known as hydrogen peroxide, is both popular and...
  • Biotin for hair: does it really work?

    Biotin for hair: does it really work?

    Biotin, often presented as a key component of hair products, is attracting growing interest from those looking to improve the health and appearance of their hair. This B vitamin, known as B7 or H, is an essential component of...
  • Hair anatomy: what is it made of?

    Hair anatomy: what is it made of?

    Hair is a silent witness to our history, our health and our genetic heritage. Each strand of hair that adorns our heads is the fruit of a complex anatomy composed mainly of keratin and containing secrets that science has yet to discover...
  • Scalp cyst: when should you worry?

    Scalp cyst: when should you worry?

    The scalp, like other parts of our skin, can sometimes show abnormalities, such as the appearance of cysts. While most of these formations are benign and harmless, it's natural to wonder about their nature and the possible causes.
  • What is scarring alopecia?

    What is scarring alopecia?

    Scarring alopecia is a form of alopecia resulting from the permanent destruction of hair follicles. This form of baldness differs from other types of alopecia in that the hair loss is permanent. How does it happen?
  • What is actinic keratosis of the scalp?

    What is actinic keratosis of the scalp?

    The scalp, often forgotten in our sun protection routine, is nonetheless an area vulnerable to the harmful effects of UV rays. One of the major concerns in hair dermatology is actinic keratosis of the scalp, a precancerous condition that can lead to...
  • What is the role of the sebaceous glands?

    What is the role of the sebaceous glands?

    When we talk about hair health and beauty, we often focus on things like hair products and styling techniques. And yet, at the root of radiant hair and a healthy scalp...
  • PH: what impact does it have on the health of our hair?

    PH: what impact does it have on the health of our hair?

    Le pH est une mesure souvent évoquée dans les domaines de la chimie et de la biologie. Il joue également un rôle fondamental dans les soins capillaires. Il s’agit d’une échelle mesurant l’acidité ou l’alcalinité d’une solution, s’étendant de 0,…
  • 8 tips for healthy hair

    8 tips for healthy hair

    Like our skin, our hair reflects our general state of health and the care we give it. Shiny, supple, strong hair is what many people want, but how do we achieve it? External aggressions, the...
  • Hair bulb: what you need to know

    Hair bulb: what you need to know

    At the base of each strand of hair is a vital structure, the hair bulb, which guarantees the health and growth of your hair. This small component underlying the scalp is at the heart of many questions...
  • What role does folic acid play in hair?

    What role does folic acid play in hair?

    Folic acid, often mentioned in the context of prenatal health, is much more than just a beneficial nutrient during pregnancy. This vitamin also plays a significant role in hair health. From shine to the prevention of...
  • Autoimmune disease and hair loss: what you need to know

    Autoimmune disease and hair loss: what you need to know

    Hair loss, a phenomenon often associated with genetic factors or stressful events, can also be a tell-tale sign of more profound health problems, in particular autoimmune diseases. Understanding the link between autoimmune diseases...
  • Scalp pruritus: causes and treatment

    Scalp pruritus: causes and treatment

    Scalp pruritus, more commonly known as itchy scalp, is a skin problem that can affect anyone at any time in their lives. It is often accompanied by feelings of discomfort, irritation...
  • Lichen planus pilaris: how is it treated?

    Lichen planus pilaris: how is it treated?

    Lichen planus pilaris (LPP) is a skin condition which, although relatively unknown, has a significant impact on the quality of life of sufferers. Characterised by a persistent inflammation of the scalp, this autoimmune disease causes scarring alopecia, which...
  • Hair loss and breastfeeding: what you need to know

    Hair loss and breastfeeding: what you need to know

    Hair loss after childbirth, often accentuated during the breastfeeding period, is a phenomenon that worries many young mothers. Behind this experience, which can be a source of concern, lies a complex mix of hormonal changes, needs and...
  • Hair loss: what is its symbolic meaning?

    Hair loss: what is its symbolic meaning?

    Hair health and beauty have always played an important role in people's lives, transcending the purely aesthetic aspect to take on connotations that are deeply rooted in the human psyche. Hair loss, or alopecia, is not just a...
  • What illnesses are linked to hair loss?

    What illnesses are linked to hair loss?

    Although hair loss is often associated with aesthetic problems and low self-esteem, it can also be a sign of more serious underlying illnesses. Underlying causes can range from autoimmune disorders,...
  • Testosterone and hair loss: the role of hormones

    Testosterone and hair loss: the role of hormones

    Testosterone, a predominantly male hormone, plays a central role in hair growth and loss. For some, its conversion to dihydrotestosterone (DHT) can influence the miniaturisation of hair follicles, leading to androgenic alopecia, a common form of hair loss.