Biology

Eczema, allergic rhinitis, asthma, food allergies... all these symptoms can be linked to what is known as an atopic condition. How is atopy defined? When was this disease identified? Let's delve into this.

While it is often underestimated due to the negative image that lipids project in terms of outcome, sebum is nevertheless essential for the health of the skin and hair. But what do we really know about this oily substance? What is it and what is its purpose? Discover everything you need to know about it in this article.

Although the term "T-zone" is often used to characterize combination skin, it actually applies to all skin types in varying proportions. It is generally associated with "shine" and "blackheads". But what really lies behind this expression? We have delved into the scientific literature to provide more clarity on this mysterious zone.

Skin color, pigmentation defects (brown spots), tanning... these phenomena result from the activation of a specific machinery responsible for the production of pigments, melanin. In this article, we propose to scrutinize this mechanism in order to better understand it.

Menopause is not a pathological condition. It is a physiological phenomenon that affects all women at a certain age. Besides the cessation of menstruation, 80% of women experience at least one other symptom. Among the changes that occur during menopause, a notable one is the alteration of the skin's condition. What is the impact of menopause on the skin? This article provides some insights.

With the hormonal changes caused by menopause, the visible effects on the skin are quite pronounced. The loss of skin elasticity and firmness are among the common consequences. How can one maintain firmer skin during menopause? This article provides some answers.

Significant changes in facial and body hair occur after menopause. These changes can have a substantial negative impact on self-esteem. Indeed, menopause is characterized by clinical signs of moderate hyperandrogenism, such as excessive facial hair growth. In this article, we explain everything about the appearance of unwanted hair during menopause.

The skin is a complex organ made up of different layers: the epidermis, dermis, and hypodermis. It's made up of tiny openings called cutaneous pores, through which sweat and sebum flow. What is the function of pores? Moreover, what are the different types of pores, and why are they essential to the skin? We answer your questions about these little channels, too often demonized.

The skin is among the essential organs that make up the body. It is composed of several internal layers (epidermis, dermis, hypodermis) and an external hydrolipidic film. The latter acts like a barrier that protects the internal tissues and organs from external aggressions. But what is it made of? How do we take care of it daily? Let's focus.

The skin and mucous membranes form a physical barrier that effectively protects the body from external influences. Nevertheless, after a trauma or infection (skin injury, burn, invasion of bacteria, fungi or viruses), foreign substances may penetrate the barrier. In this case, an inflammatory reaction occurs. You can find out what this is here:

Blood circulation allows for the transport of oxygen and nutrients to the organs and cells. Microcirculation refers to the interface between the blood and the cells.

Wrinkles, loss of skin elasticity, pigmented spots… Skin aging manifests differently in each individual. While age plays a major role, it isn’t the only factor. Our lifestyle and environment also influence skin quality and the aging process. What are the various factors driving skin aging? Let’s explore the intrinsic and extrinsic origins of cutaneous aging together.

Menopause affects all women between the ages of 45 and 55. It is characterized by the permanent cessation of periods (menstruation). At this stage of life, the skin undergoes numerous changes: wrinkles, pigmentation spots, dryness... How can one take care of their skin to combat these changes? Elements of the answer are provided in this article.

The skin reflects the passage of time and lifestyle habits. Its requirements evolve from adolescence to adulthood, making it necessary to adjust your skincare routine. To care for your skin as effectively as possible, it’s helpful to understand the different stages it goes through. How does skin change over time? Continue reading to learn more.

Contrary to common misconceptions, skin aging is not limited to wrinkles but also affects the skin’s texture, color, and firmness. From loss of elasticity to dehydration, each sign reveals a stage of the aging process. How can you recognize aging skin? Explore the multiple facets of this natural process here.

Invisible yet fundamental, skin pH determines the proper functioning and comfort of the skin. But what exactly do these two letters mean, and how do they concretely influence the skin? Let’s explore this skin indicator.

The pH, or potential hydrogen, of the skin, and more specifically of the hydrolipidic film, serves to protect the skin and combat bacterial infections. However, various factors can disrupt this pH, which leads to unfortunate consequences for the skin. Here's an overview of the consequences of a disrupted skin pH.

The stratum corneum is often referred to as the "acid mantle". This term is justified by the acidic pH of the hydrolipidic film, which plays a significant role in antimicrobial defense and the integrity of the stratum corneum. Therefore, a disruption in skin pH can lead to numerous discomforts. How can one maintain their skin's pH? This article provides some insights.

While raw fish, deli meats, soft cheeses, wine, and other foods and beverages are off-limits during pregnancy, the list of restrictions extends beyond diet. It also includes items in your daily skincare routine. Although skin serves as a first line of defense against many chemicals, skincare products are formulated to penetrate skin layers and may enter the bloodstream and reach the developing fetus or breast milk. Read on for a list of active ingredients to avoid during pregnancy and breastfeeding. This can help reduce your exposure and lower potential risks.

Nothing is more frustrating than hair that reappears only a few days after a waxing session! Fortunately, there are a few tricks to maximize the time between sessions and slow down hair growth. We'll show you how.

Exposure to the sun is an action full of contradictions. Indeed, it presents increasingly identified harmful effects (sunburn, burns, cancer risks...) but also several virtues, detailed in this article.

Because they are not simply there to make our lives difficult, understanding the physiological reasons for skin issues is important. Let's immediately shed some light on this subject.

Premenstrual syndrome, loss of appetite, menstruation, mood swings... from puberty to menopause, women experience the menstrual cycle and its array of disturbances every month, and these are not the only consequences. The culprits? Hormones secreted by the ovaries, adrenal glands, and adipose tissue. Sensitive to these fluctuations, the skin is also affected during the different phases of the cycle. Discover the changes that the skin undergoes during each period of the menstrual cycle in order to better care for it and live more comfortably with it.

Pill, patch, IUD... It can sometimes be difficult to understand the jargon of contraceptive methods. So, to clearly explain all these contraceptives (their forms, their functions, their actions...), here's a brief overview of the existing solutions.

For many women, menstrual pains can be a real ordeal. Where do these unpleasant sensations come from? Do they serve a purpose? And most importantly: what can be done to alleviate their effects? Here are some answers...