The hair
Discover the mechanisms in the hair life cycle that enable hair to be born, grow, fall out and be replaced by new hair.
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, 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...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...
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...
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...
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 is a measurement often used in chemistry and biology. It also plays a fundamental role in hair care. It is a scale measuring the acidity or alkalinity of a solution, ranging from 0,...What is hair density?
The beauty and health of our hair is often linked to one key concept: hair density. Hair density can be influenced by many factors, including heredity, stress and age. Find out how to measure...How many centimetres does your hair grow each month?
3 preconceived ideas about the speed of hair growth 1. "Hair grows one centimetre a month": TRUE and FALSE It is commonly accepted that Caucasian hair grows one centimetre a month (i.e. 12 cm a...
Japanese straightening
Japanese straightening changes the keratin in your hair: what are the positive and negative aspects? Clauderer, Hair Specialist, gives you the answers
Brazilian straightening
Last minute, October 2024: new health risks lead the health authorities (Agence Nationale de Sécurité Sanitaire) to "advise against the use of these products" see: https://www.ameli.fr/assure/actualites/alerte-sur-les-risques-lies-aux-produits-de-lissage-bresilien HOW DOES IT WORK? Chemical + thermo-mechanical action This involves...
Blow-drying and straightening irons
HOW DOES IT WORK? Thermo-mechanical action, reversible with humidity Both processes act on the flexible hydrogen and salt bonds in keratin. But because these bonds are hydrophobic (they don't like water), they immediately revert to their natural form, as soon as the...What is hair keratin?
Keratin is the raw material of our hair, accounting for 97% of its final composition. Is it a living or a dead organ? Is it fragile or infinitely manipulable? Its complex structure is not easily...
The life cycle of a hair
What is the average length of a hair life cycle? Our hair is constantly being renewed, with an average life cycle of 3 years for men. For women, it's longer: it varies between...
how the hair follicle works ?
The hair follicle is a small pocket of epidermis (in blue above), where the hair is produced and where its root is located (in black). The only living organ that can die and come back to life in a perfectly autonomous and cyclical way, the hair follicle...
