Skin conditions
Now that you know how to identify your skin type, it's essential to know your skin condition to perfectly adapt your routine! Unlike skin type, there are a huge number of different skin conditions.
Acneic
Skin affected by acne, an inflammatory condition, is characterized by an overproduction of sebum, promoting the multiplication of Propionibacterium acnes, a bacterium naturally present in the sebaceous glands. This bacterium metabolizes sebum into fatty acids that irritate the skin, triggering inflammatory reactions.
There are several types of buttons:
- Closed comedo (whitehead)
- Open comedo (blackhead)
- Papule (painful, hot red spots)
- Pustule (purulent pimples)
- Nodule or cyst (large bumps in or under the skin)
Did you know?
Dry skin cannot be acne-prone because this type of skin lacks lipids.
For combination to normal skin, you should focus on localized treatment to avoid overly damaging the dry area. Adolescent acne (open and closed comedones) is different from adult acne (cysts on the oval of the face).
Sensitive
Sensitive skin is characterized by its reactivity, manifested by sensations of tingling, redness, itching, and heating. These reactions are often caused by an alteration of the hydrolipidic film, thus weakening the skin's natural protective barrier. As a result, the skin becomes more vulnerable to bacteria and reacts irritatingly to external stimuli such as perfumes, alcohol, temperature changes, and clothing.
Dehydrated
The hydrolipidic film, present on the surface of the skin, regulates the evaporation of water contained in the layers of the epidermis. When this physiological barrier is impaired, water from the dermis can no longer reach the epidermis, thus compromising the protective function of the barrier. As a result, the stratum corneum becomes permeable, allowing water to escape and leading to an increase in transepidermal water loss.
Dehydrated skin is characterized by a lack of radiance, discomfort, redness, and the appearance of fine lines (dehydration wrinkles). These symptoms are generally more pronounced at the end of the day, unlike dry skin where these signs are noticeable early in the day.
Mature
Mature skin typically appears after menopause. Due to a drop in hormones, the skin thins, loses density, elasticity, and suppleness. It becomes dry, and wrinkles appear.
Note that oily skin very rarely becomes mature.
Rosacea
Rosacea is a visible and permanent dilation of the small blood vessels in the face. This can manifest as flushing (hot flashes on the face). The exact causes of rosacea are not known, but a link is suspected with genetics, external aggressions (wind, pollution, heat, cold, etc.), spicy food, exercise, certain cosmetics, hormones, strong emotions, etc. It is noted that the lighter the skin, the more prone it is to rosacea.
Atone
It is a loss of elasticity (firmness), tone, and vitality of the skin. The contours of the skin are no longer defined. This can be due to age or significant weight loss.
Intolerant (allergic)
This is skin that reacts to a substance (allergens) such as perfume, preservatives, or colorants. The skin becomes red, tight, and hot. You may also see small pimples appear.
Wrinkled 
These are small furrows that generally appear around the eyes, mouth, and forehead. With age, cell renewal slows down. The epidermis (the superficial part of the skin) thins and dries out, the first fine lines appear, and healing time becomes longer. The quality of elastin and collagen naturally present in the skin deteriorates over time, and the epidermis sags.
This is due in particular to age , external aggressions (sun, pollution, stress, lifestyle, tobacco, etc.), skin type (oily skin is protected by sebum, so it will age less quickly than dry skin) and genetics .
There are two types of wrinkles:
- Expression wrinkle (dynamic): It emphasizes personality, and is linked to the repetition of muscular contraction of the facial muscles .
- Age wrinkle (static): Due to age.
Atopic
Atopic skin is dry to very dry skin with a weak or non-existent hydrolipidic film. Since the skin is no longer protected from external aggressions, it reacts as soon as it comes into contact with an allergen.
