All you ever wanted to know about skin and dermatological disorders.
View available information by dermatological disorder
Your face skin
Your skin in the sun
Video >  results
Golden rules >  results
Some habits are essential in order to care for your skin and have a radiant complexion all year long.
Beautiful, healthy skin requires daily care, which will leave it softer, suppler and radiantly beautiful!
To avoid endangering your skin when in the sun, there are a few rules that must be followed.
Focus on... >  results
The epidermis is made up of a large proportion of water. When this water is lacking, the skin becomes vulnerable. This level of hydration must therefore be restored.
Atopic dermatitis is an increasingly common skin disorder. To reduce the number of outbreaks, avoid contact with allergens and regularly apply emollient creams.
Summer light eruption is the most common of sun allergies. Triggered by UV rays ....
Frequent contact with water and detergents are forms of stress which weaken the nails. Here are some tips to keep them sturdy and healthy.
3 questions to an expert >  results
Interview with a dermatologist on nail fragility and its treatments
Interview with a dermatologist, who speaks about treating dandruff.
Interview with a dermatologist who speaks about treating psoriasis.
Interview with a dermatologist who discusses treatment of skin photosensitisation.
Interview with a dermatologist who discusses treatment of sun-induced herpes.
Interview with a dermatologist who discusses different solutions for preventing summer light eruption.
Interview with a dermatologist who speaks about treating dry skin, particularly in winter.
Interview with a dermatologist who discusses the use of make-up on sensitive areas around the eyes.
Interview with a dermatologist who discusses effective techniques for applying age-defying make-up.
Interview with a dermatologist who discusses the precautions to take when applying make-up to sensitive skin.
Interview with a dermatologist who discusses the use of make-up on pigmentation disorders.
Interview with a dermatologist who shares advice on using make-up on undereye circles.
Interview with a dermatologist who shares advice on using corrective make-up to camouflage a scar.
Interview with a dermatologist, who speaks about the different hair loss treatments.
Interview with a dermatologist, who speaks about treating itchy scalps.
Interview with a dermatologist who speaks about treating atopic dermatitis in children.
Interview with a dermatologist on dermatological treatment methods for pigmentation spots caused by repeated sun exposure.
Interview with a dermatologist on how to treat facial dryness.
Interview with a dermatologist talking about skin sensitivity and how it can be treated.
Interview with a dermatologist on how to prevent and treat rosacea.
Interview with a dermatologist on how to treat acne when it occurs during adolescence.
Interview with a dermatologist on how to treat dehydrated skin.
Testimonies >  results
Tight feeling, roughness and discomfort: Carla has always had dry skin. Thanks to these daily steps she finally has velvety skin…
Julie has always had sensitive skin. To soothe her skin and reduce its sensitivity she decided to consult a dermatologist.
Laura suffered from acne for several months. But with the support of her dermatologist she now has clear skin again.
With the first signs of ageing and changes in temperature, Emilie’s face skin suffered from unsightly diffuse redness and visible vessels. A few daily steps were all it took to treat the condition.
Some time ago, Laura’s sensitive skin became particularly intolerant. But at last she has found the solution to take care of it.
Without going to extremes and prepared to do anything to stop the ravages of time, Sophie understands the importance of looking after the health and beauty of her skin.
For several years, Camille had recurring dry patches on her face. She has treated them successfully.
Discover how Céline succeeded in getting over her complex thanks to corrective make-up.
When she was young, Alexandra had dry skin. She still does. Luckily, moisturising creams effectively restore comfort to her skin!
During her first pregnancy, Marie developed a pregnancy mask on her face... But not the second time. She explains why.
Mathilde, 29, has suffered from chronic summer light eruption since she was 18. Since she began using dermatological sun creams that filter UVB and UVA rays, she can finally enjoy the sun with peace of mind.
After years of mistreating her hair, Séverine developed a severe case of dandruff. She has finally succeeded in getting rid of it.
Learn how Nadia, age 27, began using nail polish for fragile nails, and reconnected with colour.
Enlightened by science >  results
Men's skin is thicker and oilier than that of women, with more blood vessels and denser hair growth. Consequently, it has its own specific problems.
UV rays only account for 5% of the sun rays that reach the earth, but they are very powerful.
A major process of skin ageing, oxidative stress damages both the skin’s epidermal and dermal cells and contributes to their degeneration.
Il existe différents profils de peaux sensibles. Les peaux intolérantes, à rougeurs, sèches ou déshydratées peuvent en effet être sensibles.
Key Figure >  results
Key Figure - 76% Is the proportion of teenagers ...
76% Is the proportion of teenagers who are affected by skin problems. They represent 70% of dermatologists’ acne patients.
Source : Quantitative La Roche-Posay survey among 118 dermatologists.
Key Figure - 62% Is the percentage of women ...
62% Is the percentage of women who say they have skin that is reactive, sensitive, irritable and intolerant to all cosmetic products and even water.
Source: Willis CM, Shaw S, de La Charrière O, et al Sensitive skin: an epidemiological study Br J Dermatol 2001;145:258-63.
Key Figure - 65% Is the percentage of women ...
65% Is the percentage of women over the age of 25 who say they suffer from redness on their face.
Source : Redness monitoring unit: study conducted in 2005 by the La Roche-Posay laboratory in 7 European countries and Canada on 2,500 people.
Key Figure - 20% Out of the total amount of water ...
20% Out of the total amount of water present in the human body, this is the percentage contained in the skin.
Key Figure - 70% Is the proportion of women ...
70% Is the proportion of women who say they have sensitive skin. Tightness, discomfort and redness are signs of sensitive skin on the face.
(Source : IPSOS Health & Beauty, figures in France taken from pharmacies in 2005)
Key Figure - 20% Is the percentage of children ...
20 % Is the percentage of children who suffer from atopic eczema. A skin problem that not only upsets the child but their families and friends as well.
Source : 2002 CHU Claude Huriez France
Key Figure - 20% Is the percentage of women ...
20% Is the percentage of women who say they have dry skin on their face.
Source : Health and Beauty 2007
Key Figure - 2/3 L'exposition aux rayons UV ...
2/3 This represents how much of skin ageing can be attributed to UV ray exposure.
Source : Barbara Gilchrest (M.D. School of Medicine, Boston University).
Key Figure - 76% According to a study conducted ...
76% According to a study conducted on patients suffering from sebaceous scaly patches, stress and tiredness were the cause in 76% of cases.
Source : Study by the Grupo Español del Estudio SEBDERM, 2007
key Figure - 62% Is the proportion of women ...
62% Is the proportion of women who say they are concerned or very concerned by their pigmentation spots. However, there are solutions available for treating them effectively.
Source : IPSOS U&A Study 2007 - Europe 5.
Key Figure - 23% Is the percentage of men ...
23% Is the percentage of men and women who suffer from chapped lips or hands. And almost 1 in 10 people are affected by dry patches on their skin.
Source : IPSOS Europe 2003
Key Figure - 58% This is the percentage of atopic children ...
58% This is the percentage of atopic children who have problems sleeping.
Source : Clinical trial conducted on 209 children, ages 2 to 16, with light to moderate atopic dermatitis.
Key Figure- 100% Men's skin ...
100% Men's skin is oilier than that of women. Its hydrolipidic film is richer, with 100% more lipids on the surface.
Key Figure - 50 to 80 : This is the average number ...
50 to 80 : This is the average number of strands of hair that we naturally lose each day, based on a natural and normal hair cycle.
Key Figure - 25 %
25 %: This is the percentage of pigments contained in a corrective foundation. By means of comparison, traditional foundation has 15 to 20%.
source : Labos LRP
The statistic - 50% : This is the percentage of women ...
50% : This is the percentage of women who have a sensitive scalp and suffer from itchiness and irritation.
Source : Clinical trial on skin sensitivity conducted on 400 patients by Dr Laurent Misery.
Key Figure - 25 : From delicate pink to intense velvety red ...
25 : From delicate pink to intense velvety red, there is a full palette of shades in the range of lipsticks for sensitive skin.
The statistic - 50% : That is the percentage of women ...
50 % That is the percentage of women who report they have sensitive eyes. This sensitivity takes the form of itching, watering eyes, redness, dry eyes, etc.
Source: IPSOS, 2007, Europe: panel of 10,000 people.
Key Figure - 95% : UVA's account for ...
UVA's account for 95% of the ultraviolet rays that reach the earth. Insidious because they cause no pain, UVA rays penetrate very deeply into the skin and can damage cells
Key Figure - 48% This is the percentage of men ...
48% This is the percentage of men, mainly between the ages of 30 and 50, who suffer from dandruff.
Source : Ipsos, 2003
The statistic - 50% of sun capital is exhausted ...
50% of sun capital is exhausted by the age of 20
Source : Godar DE et al. UV doses of young adults. Photochem Photobiol 2003.
Key Figure - 3 to 5% This is the percentage ...
3 to 5% This is the percentage of the European population affected by psoriasis.
Source: 2002 CHU Claude Huriez France
Key Figure - 50 to 75% This is the percentage of pregnant women ...
50 to 75% This is the percentage of pregnant women affected by chloasma, or pregnancy mask.
source : Roger D., Boudrie JL., Vaillant L. and Lorette G. Peau et grossesse ("Skin and Pregnancy"). Encycl Méd Chir (Editions Scientifiques et Médicales Elsevier ), Gynécologie/Obstétrique, 5-038-A-, 2000.
Key Figure - 3 à 6 : That is how many months ...
3 to 6 : That is how many months it takes for a nail to completely redevelop. A toenail will take twice as long to grow.
True or False ? >  results
When worn for too long, nail polish can make nails turn yellow
Unless you wear a transparent or treatment base coat. This base coat offers a layer of protection between the nail and the pigments in your varnish. Nevertheless it is still a good idea to let your nails breathe and wear nothing for a few days. Some varnishes have anti-migration pigments to limit yellowing of the nails.
A woman who did not get pigmentation marks during her first pregnancy is not at risk for her second pregnancy
All women are at risk for pigmentation marks and pregnancy mask, regardless of whether they had them during their first pregnancy.
It is normal to experience tight, pulling sensations after a shower
Dry skin feels tight, especially after a shower and particularly in regions with hard water. To minimize skin discomfort, we recommend that you use a gentle, soap-free cleanser and shower in lukewarm water.
Tight, pulling sensations are much more frequent during the winter.
Our skin tends to become drier during the cold months. As a result, pickling and tight, pulling sensations are more common during the winter. This is why it is important to effectively moisturise our skin when the temperatures are low. This is particularly true for our hands, which are increasingly exposed to the cold.
Psoriasis is linked to stress
We are still unsure as to what precisely causes this skin disease. Nevertheless, the link between psoriasis and stress has been clinically proven. In fact, stress can trigger outbreaks of psoriasis in individuals who have a genetic predisposition to the disease.
Artificial UV tanning sessions let you tan in complete safety
Tanning is the skin's defence mechanism against UVB rays. Yet UV tanning beds diffuse UVA rays in doses higher than those in sunlight: insidious because they are painless, they only provide a superficial tan and encourage the production of free radicals which are responsible for skin ageing and alterations in the cellular system. Therefore UV tanning beds speed up premature skin ageing and increase the risks of developing skin cancer.
If I have a tan, I no longer need any protection
The skin has defense mechanisms to fight the effects of UV rays: it thickens and produces a pigment (melanin) which partially filters UV rays and gives colour to the complexion-- your tan. However, this "natural" protection against the harmful effects of UV rays is superficial because it only partially filters out UV radiation. A tan therefore does not exempt you from using a sun production product.
Sun protection products prevent vitamin D absorption.
UV rays are required to synthesise vitamin D, which is essential in fixing calcium in the bones. In the summer, even if the sky is overcast, brief periods of exposure (15 minutes) twice a week are all it takes to ensure absorption. Therefore, sun protection does not interfere with this process in any way.
Dandruff is caused by a lack of hygiene
Dandruff is caused by the proliferation of microscopic yeast in the scalp, called Malassezia. Harsh hair care products, stress, a poor diet and even wearing a hat for long periods of time may also play a role in the formation of dandruff.
Products for sensitive eyes do not offer optimal results
Thanks to a rigorous selection of ingredients, make-up for sensitive eyes ensures optimal comfort. At the same time, it also delivers an outstanding beauty impact: intense colours for eye shadows, volume and/or length for mascara... and in all cases, the products have impeccable hold and colours that do not fade.
You should always use a moisturising cream before for applying make-up
For a successful, luminous, even and long-lasting make-up result, it is advisable to moisturise the skin, regardless of whether you use a foundation. Moisturised skin also makes it easier to apply make-up and evens the skin's texture.
Make-up prevents the skin from breathing and causes blemishes
Choosing make-up products with a hypoallergenic, purified formula minimises the risk of intolerance and skin sensitivity and ensures maximum comfort for the epidermis. Certain products are even enriched with sebo-regulating zinc to fight the overproduction of sebum.
Lips are dryer in the winter than in the summer
In both summer and winter, lips are confronted with external stress: sun, seawater, dust and chlorine on the one hand and cold, wind and pollution on the other. Unlike the rest of the body, lips have no corneal layer, sebaceous glands or melanin supply to protect them.
Cutting your hair makes it stronger
This is a myth that is widespread, yet absolutely false. Our hair, which is embedded in the hair follicles underneath the scalp’s surface, grows from its roots. Cutting a strand of hair at the surface of the scalp will have no strengthening effect on the hair whatsoever.
Make-up can worsen my skin problems
TRUE and FALSE
Certain ingredients in make-up products can potentially be allergenic. However, there are products that provide high dermatological and ophthalmological tolerance. With these you can avoid dryness and roughness of the epidermis as well as tightness and redness.
Baldness only affects men
Both men and women can lose their hair. However, women experience diffuse hair loss and tend to lose the hair on the top of their head. For men, hair loss may be much more extensive, leaving only a thin crown of hair above the neck and receding temples.
Dermocorticoids are recommended for treating itchiness.
Creams that contain corticoids, called dermocorticoids, treat skin lesions as soon as they appear. In a remission phase, intensely moisturising emollient creams help restore the skin barrier and fight against cutaneous dryness.
Some skin types restore better than others
Certain factors can indeed influence the reconstruction of the skin. Skin heals quicker in young people for example. Morevover, smoking, taking certain medicines or even certain nutritional deficiencies, can impair the healing process.
Men's skin is thicker than that of women.
Men have thicker skin than women, both in the dermis and the epidermis. On average, the skin on men's faces is 22% thicker.
Sebaceous scaly patches appear during times of stress
FALSE (and TRUE)
They do not only appear during times of stress. However, like other factors that lower the immune defences, stress may aggravate the problem.
A deterioration in the quality of the complexion is a sign of ageing
Loss of radiance and evenness in the complexion are the first ravages left by time. From the age of 30, melanin, which gives the skin its colour, is more unevenly distributed. The skin’s surface appears dull and uneven. It doesn’t reflect light as well and the complexion looks more uneven.
Anti-dark spot products can be dangerous for the skin
TRUE & FALSE
“Whitening” products sold by unauthorised vendors can contain illegal and dangerous substances (hydroquinone, mercury). Anti-dark spot products sold in pharmacies, however, comply with strict formulation standards and are subject to rigorous testing. These are safe.
Dehydrated skin and dry skin mean the same thing
FALSE (and TRUE)
Dehydrated skin is skin that lacks water. Dry skin is skin that is lacking in lipids. However, some dry skins can also lack water and therefore be both dry and dehydrated.
Sensitive skin is allergenic skin
The hyper-reactivity of sensitive skin is not linked to an allergy but to an abnormal excitability of the skin’s nerve endings. It can be of environmental, vascular or contact origin or be linked to an atopic skin.
The sun cures acne
The sun is a false friend. In the summer, its slight anti-inflammatory effect temporarily improves the appearance of imperfections. Yet UV rays greatly stimulate sebum production and thicken the skin leading to blocked pores. In the autumn the opposite happens: the imperfections reappear in even greater numbers.