Understand my skin
Hair and the scalp have their own hydrolipidic film, similar to the skin all over our body. Conventional shampoos can wash away the good with the bad, leaving hair and the scalp stripped and possibly leading to problems of brittle, damaged hair, greasy hair, a sensitive scalp or dandruff. A hair treatment as simple as a mild shampoo without detergents, on the other hand, balances the scalp and leaves hair soft, shiny and sleek.
Whether our hair is frizzy, curly, straight, coarse or fine, it has everything it needs to stay in good health and be moisturised at all times. Just like our skin, our hair and scalp are covered in a hydrolipidic film that protects them, keeping water in and dirt out. The hydrolipidic film comes from the scalp’s sebaceous glands at the base of the hair follicle, just like for skin. The difference is that the scalp’s hair follicles have sebaceous glands that are much bigger. This is logical, since the hair on our head is thicker and often longer than elsewhere on the body.
As the film is secreted, it sheathes the outer covering of each strand of hair, which is called the cuticle. Covering the scalp and our hair, the film protects both. When the film is in good condition, the cuticle stays smooth and moisturised, giving healthy, shiny hair with body, that reflects light and has a soft appearance. As for our scalp, it retains water and stays balanced.
Also on the scalp are an abundant quantity of bacteria and yeast that, along with the hydrolipidic film, are part of the scalp’s physiological balance. During daily life, the bacteria, yeast and hydrolipidic film can be weakened by internal and external sources, like on the rest of our body: stress, hormones, weather, pollution, unadapted shampoo, and many other reasons. Any imbalance in our scalp’s ecosystem can also weaken the scalp’s defence mechanisms that protect it from irritants. The result can be a dry and brittle hair, a sensitive and irritated scalp, greasy hair or dandruff. The scalp can also be affected by specific diseases such as seborrhoeic dermatitis and psoriasis, with their own set of symptoms.
For hair to be healthy, our scalp needs to be healthy. That means removing dirt and irritants, without upsetting the scalp’s physiological balance. And this is where problems can arise.
Dirt collects in sebum
A hair strand’s cuticle is hydrophobic, meaning it repels water. At the same time, the only way dirt can stick to hair is because the protective sheath of sebum traps dust and dirt. And you have probably noticed that it is virtually impossible to remove dirt with water alone. Dirt is also mostly hydrophobic.
The best way to remove the dirt is with a surfactant. The word is a contraction of ‘surface active agent’. It has a hydrophilic head, meaning one end attracts water, and a lipophilic tail, meaning the other end attracts fats. The tail’s role is therefore to trap fatty dirt and excess sebum. The head enables all of it to be rinsed away under water.
Detergent surfactants dry your hair and scalp
Conventional shampoos wash hair by using aggressive molecules in the form of detergent surfactants. They clean all the dirt, and strip away the hydrolipidic film at the same time. This weakens the scalp’s skin barrier function. The scalp loses moisture, and hair cuticles lose their protective covering and dry out. Your scalp can feel tight and dry and it may itch, similar to when you have dry skin elsewhere on your body. Hair cuticles also lose their moisture and become rough. Your hair turns dull. You lose patience!
Conventional shampoos have surfactants that lather and remove dirt, including lipids. The problem is they don’t differentiate between oily dirt and the scalp’s natural lipid film. The scalp becomes unprotected and sensitive. Sebaceous glands work double time to produce a protective film for hair.
As a NAOS brand, BIODERMA considers skin as part of an ecosystem. Our hair and scalp interact with the environment around them, and certain factors can cause an imbalance. To restore balance, Bioderma draws on skin’s own biology to boost its self-defence mechanisms. Nodé Shampooing was the very first product developed by Laboratoire Bioderma according to these principles.
Our conviction at BIODERMA is that for hair to be healthy, the scalp has to be in good health. Nodé is not your basic and ordinary range of shampoos. Its objective is to maintain the scalp’s balance or restore it if needed. Nodé stands for non détergent, non délipidant in French, which can be translated as non-detergent, non-stripping.
Detergent surfactants are replaced with very gentle cleansing agents. Nodé’s most important innovation as a gentle, restorative shampoo, especially at the time of its development over 40 years ago, is to incorporate into its formula biomimetic lipids that are naturally found in the sebum secreted on the scalp. These lipids are essential for daily hair and scalp care, to leave both in excellent condition.
When you wash with a Nodé shampoo as a daily hair treatment, you apply mild, non-detergent surfactants to your hair that respect your hair and scalp’s natural balance, and don’t irritate them. All dirt is washed away, while simultaneously preserving and nourishing the hydrolipidic film so that your scalp and hair stay protected. With a pH balance similar to skin’s, Nodé shampoos are tolerated by everyone, even the most sensitive scalps. Effectively and gently washed, your hair stays soft and shiny.
BIODERMA invented the non-detergent principle over 40 years ago. The Nodé formula was completely original because the shampoo is able to clean hair while also preserving the hydrolipidic film’s physiological characteristics. Another special feature is the small amount of lather it produces. This can confuse users the first time they wash with it. But they quickly understand that it’s a guarantee of how gentle and soft it is to wash with it.
For straight or curly hair, fine or coarse hair, whether your hair is already in good health, or you have dry or damaged hair or a scalp that is greasy or sensitive, Bioderma’s Nodé shampoos effectively wash, protect and nourish your hair. They clean without irritating, and restore and maintain balance on your scalp.
Ingredients and formulation that preserve your scalp’s health.
pH-Balanced, Non-Detergent Shampoo
Bioderma has found the optimal combination of two plant-based surfactants that are both soft and effective. Sodium Lauroyl Oat Amino Acids are extremely gentle. Through their lipophilic action, they trap dirt and excess sebum. Caprylyl/Capryl Glucoside come from coconut. Hydrophilic, these ingredients make it easy to rinse away all dirt under the water.
Non-Stripping
The mild cleansing bases don’t strip. They respect your hair and scalp’s physiological balance.
Healthy, Beautiful Hair
With a healthy hydrolipidic film, your hair is less static. It also keeps its body and shine.
Formulated with gentle, non-stripping cleansing bases, the full range of Bioderma’s Nodé shampoos respects your scalp’s biological balance for optimum tolerance. The chart below compares a conventional shampoo’s action on your hair and scalp’s hydrolipidic film with Nodé’s.
Here is what your scalp and hair look like before washing. The deep green shows the hydrolipidic film covering your scalp and part of the hair shaft. All kinds of dirt is caught inside the film.
With a conventional shampoo, the dirt has all been removed, and the hydrolipidic film that protects hair and the scalp has been altered and reduced. The risk with this type of shampoo is that the hydrolipidic film will become depleted, possibly leading to discomfort, irritation and hair that is less healthy.
With Bioderma Nodé non-detergent shampoos, all dirt is washed out and the hydrolipidic film is preserved. Hair stays healthy and shiny, and the scalp maintains all of its balance and protection.
Bioderma Nodé provides a wide range of gentle, pH-balanced and restorative shampoos. Like a daily treatment, they meet the needs of normal hair and scalp as well as a number of different problems: dandruff, an itchy scalp, dry scalp, greasy hair, dry and damaged hair, and scaly patches.
Bioderma Nodé shampoos are formulated with mild, non-stripping cleansing bases. They respect the biological balance of the hair and scalp ensuring optimum tolerance and gentle washing for all members of the family.
Hair and scalp care
Hair problems such as a sensitive, oily or dry scalp, dandruff, scales, itching and seborrhoeic dermatitis can all affect your everyday life.
BIODERMA’s solution: Nodé, the expert range for healthy hair. Nodé has a whole range of cleansing and care products that are specifically recommended by dermatologists: anti-dandruff shampoos, shampoos for oily scalps, shampoos for dry scalps, shampoos for sensitive scalps, scalp care for seborrhoeic dermatitis and psoriasis, etc.
