Biology

If your skin has been unusually sensitive, dry or irritated, you should take the time to assess its defensive strength. The barrier shields your skin from environmental stress, but when compromised it can cause considerable problems. The good news is that damage to this layer of skin can be repaired if the correct approach is taken. Let us see how you can restore this defence system and return it to a healthy state.

The skin is continuously renewed by the division of epidermal cells. However, with advancing age, this process becomes less efficient. What is the relationship between cellular renewal and skin ageing? Discover more about this subject below.

The skin serves as a living interface between our body and the environment. It protects, regulates, and constantly communicates with our cells. But do you truly understand the full extent of its functions? Discover here the various roles of the skin and how it safeguards the body’s equilibrium.

Skin is far more than a mere covering: it is a complex organ that protects, regulates and communicates with our environment. Its three layers – the epidermis, dermis and hypodermis – fulfil complementary and essential functions. How do they interact to maintain skin homeostasis? Continue reading to gain a clearer understanding of skin structure.

Everyone’s skin reacts differently to sun exposure, and these differences are not accidental. The Fitzpatrick classification categorises skin types according to their sensitivity to ultraviolet radiation. How was this scale established, and how is it used today? Discover in this article everything you need to know about the Fitzpatrick classification.

The skin barrier is one of the most fascinating and vital components of your body. It is often taken for granted until something goes wrong. What is this powerful shield that protects us from the rigours of the outside world while keeping us intact? Let’s take a closer look at what makes this barrier so important.

Often associated with sebum production and oily skin issues, the sebaceous glands are, however, more complex than commonly believed. What are their physiological characteristics? How do they interact with the skin? Let us explore together the various facets of the sebaceous glands.

While sunlight is essential to synthesise vitamin D, it can damage the skin after surgery. What risks arise from sun exposure following an operation? Read on to learn why sun exposure after surgery is not recommended.

Despite progress in oncology, some cancers remain resistant to chemotherapy, radiotherapy, and immunotherapy. This impasse prompts researchers to seek alternative approaches. A recent discovery concerns a molecule that induces an atypical form of cell death, ferroptosis, by exploiting an unexpected iron dependency in cancer cells. What is this new treatment strategy and how might it be applied? We will explore these questions.

Menopause is an unavoidable stage in women’s lives. It can cause fatigue, hot flushes, sleep disturbances, and increased skin laxity. Could it be delayed? One compound is drawing attention: rapamycin. First studied for its effect on lifespan, it may also postpone the onset of menopause. Discover the latest scientific advances on this topic.

The production of collagen, a protein crucial for skin elasticity and firmness, has long been considered primarily linked to the activity of fibroblasts. However, a study recently published in Nature Communications suggests that keratinocytes could play a significant role in collagen synthesis. This raises the following question: should pro-collagen cosmetics target keratinocytes instead? Let's explore this question together.

The skin around the eyes is highly sensitive and intensely used, unlike any other area of the face. It has several biological characteristics that make it particularly vulnerable to dehydration, skin ageing, and external aggressions. To better care for the eye contour, it's important to understand what makes it unique. Continue reading to discover in detail the specificities of the eye contour.

The oxidation of fatty acids is a natural phenomenon often overlooked that could potentially impair the skin barrier and exacerbate water loss. How do fatty acids oxidise? Does this process impact skin hydration? Discover all the answers below.

Whether they're caused by pollen, animal fur, or a certain food, allergic reactions across the body can be quite distressing. What should you do when this happens? Here are all our tips.

Food allergies are common and affect approximately 5% of the global population. These reactions often manifest as skin conditions and are generally characterised by redness, swelling and itching. What are the best practices to adopt following a food allergy? Here are some key points.

Following the consumption of a food not tolerated by the immune system, food allergies can trigger various symptoms, including skin rashes. How can we explain this phenomenon? Let's explore the underlying biological mechanisms together.

One of the clinical manifestations of a food allergy is the emergence of spots, which can be more or less localised. What do they look like? Discover here what types of spots can appear following a food allergic reaction.

Food allergies are associated with a wide range of symptoms, which can affect the gastrointestinal and respiratory tracts as well as the skin. How does a food allergy manifest itself on the skin? Explore this question by continuing to read.

When a spot appears, it can sometimes be challenging to identify its cause and determine whether it is of an allergic nature. However, understanding the origin of the lesions is crucial for knowing how to manage them. Discover here some keys to differentiate allergy spots from other skin eruptions.

If skin allergies can appear on various parts of the body, it is clear that the neck seems particularly vulnerable to these reactions. How can we explain that this area is so frequently the site of allergies? Discover some elements of the answer in this article.

Itching is one of the most well-known symptoms of skin allergies. But do you know what causes it? Let's explore this question together and the biological mechanisms involved through this article.

Scalp allergies are often due to an unsuitable shampoo or a hair dye that has not been tolerated. They usually manifest as itching and sometimes scaly patches on the scalp. Various measures can be implemented to alleviate these symptoms and prevent future allergic reactions. Here, find different solutions to soothe scalp allergies.

Allergic reactions, which are more common on the skin, can also affect the scalp. Most often, they are caused by certain substances found in hair products, such as dyes or shampoos. Discover here what the main symptoms of a scalp allergy are.

Although microscopic, dust mites can cause discomfort and are one of the most common causes of allergies. These tiny creatures, often found in homes, can cause various symptoms, which are easy to confuse with those of an animal or pollen allergy. Let's decipher together the characteristic signs of a dust mite allergy.

Generally benign, skin allergies are nonetheless unpleasant and can cause various symptoms. Which ones? Discover here all our advice on how to recognise a skin allergy and how to respond.