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A better life for sensitive skin.
Home > The Derm-Index

The Derm-Index

All you ever wanted to know about skin and dermatological disorders.

All skin disorders > [162] results
Video > [6] results

Video - La Roche-Posay thermal spring water

Video

Video - La Roche-Posay thermal spring water

Video - Sun risk

Video

Video - Sun risk

Video - Pigmentation disorders

Mela-D 2011 video preview

Video

Video - Pigmentation disorders

Video - Very dry and irritated skin

Mela-D 2011 video preview

Video

Video - Very dry and irritated skin

Video - Dry and uncomfortable skin

Visuel vidéo lipikar (Peau)

Video

Video - Dry and uncomfortable skin

Video - Dry and rough skin

Iso-Urea video preview

Video

Video - Dry and rough skin

Golden rules > [8] results

10 golden rules when treating baby's nappy rash

To protect baby's skin, certain steps are essential

5 golden rules to optimal beauty treatment

Even if beauty procedures seem to be commonplace these days, some precautions must still be an integral part of the process.

5 beauty steps to take care of your hair

To preserve beautiful, healthy hair, adopt a good daily hair care routine.

10 habits to help you take care of your skin on an everyday basis.

Some habits are essential in order to care for your skin and have a radiant complexion all year long.

10 pieces of advice on how to take care of your body skin

Beautiful, healthy skin requires daily care, which will leave it softer, suppler and radiantly beautiful!

4 good habits to take proper care of your skin in the sun

To avoid endangering your skin when in the sun, there are a few rules that must be followed.

Focus on... > [38] results

NUTRITIC Intense Riche: The first signature jar by La Roche-Posay

Beyond that of managing your dermocosmetic arrangements, La Roche-Posay has come to understand the undeniable importance of managing your personal life.

Intolerant skin a complex reality

Intolerant skin suffers from redness, prickling and irritation. To improve its everyday comfort, opt for hypoallergenic formulas.

A comprehensive solution
to relieve dry skins

Dry skin can be seen, but above all it is also a form of discomfort that can manifest as a painful sensation.

The same dilemma every evening?
1, 2, 3 - cleansed skin!

Do you hesitate in cleaning your skin every evening for fear of causing irritation?

Dehydrated skin: when your face loses its radiance.

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.

Sensitive skin: a complex reality

Sensitive skin suffers from redness, prickling and irritation. It is characterised by hyper-reactivity.

Wrinkles: caused by skin ageing

A major concern for women, wrinkles are one of the signs of ageing. Understanding the processes involved in their appearance helps to target the most suitable treatments.

Mature skin: Say no to general loss of volume

You want denser, plump skin that feels full to the touch?

Pigmentation problems

UV rays and skin ageing are the main factors at the origin of pigmentation problems. How do they manifest themselves and how can they be effectively treated?

The eye contour
One of women's leading
concerns in the
anti-aging combat.

When women speak about being concerned by the first signs of aging, the eye contour is mentioned first.

The eye contour:
handle with care!

Do you want to attenuate crow's feet? Erase signs of tiredness? Smooth your eye contour?

Oily skin and different forms of acne

Acne manifests itself in blackheads, spots and sebum. It can take several forms.

Two textures for soothing all ultra-sensitive or allergic skins

Currently, one in two persons claims to be allergic and/or intolerant.

Flushing, erythrosis, blotchiness and rosacea

Thin skin is particularly vulnerable to redness. To prevent this problem from taking hold over time, it should be diagnosed as early as possible.

Ingrown hairs: a common condition

Ingrown hairs, also known as folliculitis barbae, are a frequent reason for men to consult dermatologists.

Atopic dermatitis,
an allergic skin condition
that affects extremely dry skin.

Atopic dermatitis is an increasingly common skin disorder. To reduce the number of outbreaks, avoid contact with allergens and regularly apply emollient creams.

Atopic eczema

Atopic eczema is a chronic and allergenic condition. To overcome the problem and soothe the itchiness, the skin's barrier function must be restored.

Dark spots, dull complexion, loss of uniformity

8 out of 10 women suffer from complexion irregularities. Considered as an obstacle in the quest for beauty, more and more women faced with this disorder are consulting their dermatologist.

Spots, dull complexion: four tips for even, luminous skin

More than 200 million women1 are affected by pigmentation problems. Regardless of their age or where they live in the world, these pigmentation flaws can often have an impact on their well-being.

Sebaceous scaly patches

Sebaceous scaly patches are a form of chronic dermatitis. While their origin is still poorly understood, suitable treatments do exist.

Chronically irritated
skin

Chapping, dry patches, flakiness and tightness: when the skin is fragile, skin irritations become a recurrant problem.

Rough skin

Dry and rough skin is caused by a lack of moisture and abnormal desquamation

Psoriasis: various types and treatments

Psoriasis, a chronic skin disease, may be treated using creams, phototherapy and spa therapy.

Summer light eruption : an extremely common sun allergy

Summer light eruption is the most common of sun allergies. Triggered by UV rays ....

Pregnant women, sun and pregnancy mask

The skin of pregnant women is very sensitive and at risk for pregnancy mask. Therefore a few precautions must be taken.

Choosing the right moisturizer

You always moisturize the skin on your face?

The cause of dry and sensitive skin: an impaired barrier function

When the skin is dry, it is more sensitive to external aggressors. As a result, it is irritated, feels tight, and becomes really uncomfortable.

The sun:
its benefits and
harmful effects

The sun provides true benefits, but you must make sparing use of them. In particular, the use of a sun protection product is indispensable.

Dry body skin

In order to restructure the cutaneous barrier in dry skin, it is essential to effectively replenish moisture.

Sun protection for all types of skin:
the "dry touch" revolution

ANTHELIOS XL Lightweight has a texture which represents a radical innovation in dermocosmetic suncare. It is immediately absorbed into skin and leaves no shine or white marks. This surprising ultra-dry finish is a real advantage when skin perspires and tends to shine, and the matte effect encourages repeat applications.

A healthy tan? Think again

A healthy tan? There’s no such thing, says Jennifer Beecker, an Ottawa Hospital dermatologist who regularly witnesses and helps treat the results of sun damage.

UVA protection

Health Canada has introduced new regulations that require a minimum amount of UVA protection in sun care products.

Children and the sun: protecting them is vital

Because it's thinner, children's skin is more vulnerable to damage from UV rays. By protecting them that you can reduce the risk of sunburn and heatstroke.

Making prevention a priority: the La Roche-Posay commitment

Since they present signs which are visible to the naked eye, skin cancers are relatively easy to detect.

What causes scalp sensitivity?

A sensitive scalp feels itchy and irritated. An overview of the causes behind scalp sensitivity and the good daily hair care routine to adopt for effectively treating this disorder.

Factors that cause men to lose their hair

man alopecia (or hair loss), which is often hereditary, may be slowed down, thanks to specific anti-hair loss treatments

Stress can trigger or exacerbate dandruff.

Dandruff is a sign of a bacterial inflammation of the scalp, which accelerates the cell renewal process. Thanks to well-adapted treatments and a healthy lifestyle, you can once again have a healthy scalp.

3 questions to an expert > [33] results

I only recommend High and Very High protection

Interview with a dermatologist who discusses sun protection methods.

Hair loss: products that have been proven effective.

Interview with a dermatologist, who speaks about the different hair loss treatments.

To treat an itchy scalp, you must first treat the cause.

Interview with a dermatologist, who speaks about treating itchy scalps.

No sun for children under the age of three.

Interview with a dermatologist who shares his advice on sun prevention in children.

An anti-dandruff treatment must be adapted to the specific type of dandruff

Interview with a dermatologist, who speaks about treating dandruff.

Educating about the risk associated with certain highly photosensitising drugs

Interview with a dermatologist who discusses treatment of skin photosensitisation.

Herpes must be treated as soon as the first symptoms appear

Interview with a dermatologist who discusses treatment of sun-induced herpes.

Sometimes I prescribe synthetic antimalarial drugs

Interview with a dermatologist who discusses different solutions for preventing summer light eruption.

Psoriasis: a topical treatment may prove to be sufficient.

Interview with a dermatologist who speaks about treating psoriasis.

Prolonged treatment to stabilise outbreaks

Interview with a dermatologist, who gives his opinion on sebhorreic dermatitis treatment.

Assess the depth of a burn in order to treat it

Interview with a dermatologist on how to treat a heat burn and/or a first-degree burn.

I prescribe soothing or healing creams

Interview with a dermatologist about skin irritations and how to treat and prevent them.

"I recommend repair creams for baby's skin"

Interview with a pediatrician who discusses treatment of nappy rash.

Skin daily moisturisation is essential.

Interview with a dermatologist about the possibilities to delay the appearance of the signs of skin ageing.

Sun exposure worsens pigmentation disorders

Interview with a dermatologist on sun protection for pigmentation disorders.

There are several ways to treat pigmentation spots

Interview with a dermatologist on dermatological treatment methods for pigmentation spots caused by repeated sun exposure.

"Like my patients, I am looking for efficacy in the treatment of pigmentation defects, but not at the expense of tolerance."

Certain depigmentation solutions can weaken or irritate the skin, thus limiting their use, particularly for sensitive skin.

Emollient creams help decrease the frequency of outbreaks.

Interview with a dermatologist who speaks about treating atopic dermatitis in children.

Intense nourishing treatments, which are particularly essential in winter

Interview with a dermatologist who speaks about treating dry skin, particularly in winter.

Some habits help prevent razor burn.

Interview with a dermatologist, who gives advice to shaving without irritating the skin.

When faced with sensitive skin, thermal spring water should be used.

Interview with a dermatologist talking about skin sensitivity and how it can be treated.

Laser treatment gives excellent results for rosacea.

Interview with a dermatologist on how to prevent and treat rosacea.

"Nearly one third of ultra-sensitive skin
types are mixed or tend towards oily"

Considered as "a major public health problem" by the World Health Organisation, allergies are a growing phenomenon.

Cleaning oily skin requires particular attention.

Interview with a dermatologist on day-to-day care for oily skin .

I always emphasize the need for regular monitoring of adolescent acne.

Interview with a dermatologist on how to treat acne when it occurs during adolescence.

Dry skin: daily moisturisation should be increased

Interview with a dermatologist on how to treat facial dryness.

Testimonials > [22] results

“My routine for my skin which doesn’t tolerate anything”

Some time ago, Laura’s sensitive skin became particularly intolerant. But at last she has found the solution to take care of it.

I’ve learned how to take daily care of my dry skin.

Tight feeling, roughness and discomfort: Carla has always had dry skin. Thanks to these daily steps she finally has velvety skin…

My skin’s comfort has been restored!

After holidaying in the tropics, Jeanne’s skin was completely dehydrated. Thanks to a few simple steps, her skin’s suppleness has been restored.

“I take care of my sensitive skin. It deserves it!"

Julie has always had sensitive skin. To soothe her skin and reduce its sensitivity she decided to consult a dermatologist.

“I’ve still got a radiant complexion… Even in my 40s!"

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.

“I’ve successfully treated my brown spots"

A few years ago, Florence developed brown spots on her face. She has now succeeded in treating them effectively.

“How we got rid of my daughter’s inflammatory acne”

Laura suffered from acne for several months. But with the support of her dermatologist she now has clear skin again.

Those unattractive red marks are now a thing of the past!

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.

"For me, ingrown hairs are a thing of the past!"

Thomas always enjoyed shaving, until ingrown hair began to appear on his face…

"I use a restoring treatment all year round… And it works for me!!

For several years, Camille had recurring dry patches on her face. She has treated them successfully.

"I’ve managed to attenuate the patches!"

A year ago, Pierre was suffering from severe sebaceous scaly patches. But by using a specialised treatment, he managed to address the problem.

“Comfortable skin makes daily life much more comfortable!”

When she was young, Alexandra had dry skin. She still does. Luckily, moisturising creams effectively restore comfort to her skin!

“Hugo’s eczema finally went away”

By meticulously following the dermatologist’s advice, Hugo had fewer and fewer eczema spells until it completely disappeared. His mother tells the story.

I did not make the same mistakes during my second pregnancy

During her first pregnancy, Marie developed a pregnancy mask on her face... But not the second time. She explains why.

"After years of allergies, I can finally get back in the sun!"

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.

“I use spa therapy to treat my psoriasis”

Isabelle, 38, regularly has spa treatments to help cure her psoriasis. In addition to the treatments she receives, she has learned to manage her stress.

"I don't skimp any more on protection!"

Laure was particularly prone to sunburn. To learn to better protect her skin, she consulted a dermatologist. Since then, she has been able to enjoy the benefits of the sun in complete safety.

My children play in the sun and I don't worry

Both of Marie-Christine's children have been going to the beach since they were very little. Thanks to their mother's responsible behaviour, they can play worry-free!

“The itchiness finally stopped!”

Christine’s scalp started to feel itchy after her summer holidays. Today, the irritation and itchiness have finally stopped, thanks to treatments for a sensitive scalp.

I tested a hair loss solution... and it worked!

Pierre was losing a lot of hair. So he began using an anti-hair loss treatment, which finally worked.

“I have finally succeeded in getting rid of my dandruff”

After years of mistreating her hair, Séverine developed a severe case of dandruff. She has finally succeeded in getting rid of it.

Enlightened by science > [9] results

UVB and UVA rays: how do they differ and what is their impact on the skin?

UV rays only account for 5% of the sun rays that reach the earth, but they are very powerful.

Hair loss chain reaction

A scientific discovery has been made that highlights a phenomenon, which causes a hair loss chain reaction: micro-irritation.

The hair’s life cycle

Each day, we lose 50 to 80 strands of hair. New strands of hair, which have an average life cycle of 2 to 7 years, replace those that we lose daily.

Hair and scalp physiology

With a surface area of approximately 600 cm2, the scalp is a protective, physical barrier from which the hair grows.

The different types of skin alterations

Dermatological procedures and outside attacks can lead to the appearance of minor or severe skin lesions.

Men’s skin: biologically different from women's skin

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.

Cellular oxidation, a major process of skin ageing

A major process of skin ageing, oxidative stress damages both the skin’s epidermal and dermal cells and contributes to their degeneration.

The formation of acne lesions

Acne manifests itself through the formation of retentional lesions called comedones, and inflammatory lesions, in other words, spots.

La réactivité cutanée : 3 origines pour le dénominateur commun des peaux sensibles

Il existe différents profils de peaux sensibles. Les peaux intolérantes, à rougeurs, sèches ou déshydratées peuvent en effet être sensibles.

Key Figure > [23] results

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 - 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.

89%89% of women believe that NUTRITIC Intense gives their skin day-long comfort.

83%Improvement in dry skin*.

84%84% of women with dry skin* experience pain.

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 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 - 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 - 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 - 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- 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 - 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 - 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 - 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

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 - 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 - 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 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

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 - 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

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.

True or False ? > [23] results

Baldness only affects men

FALSE
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.

Cutting your hair makes it stronger

FALSE
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.

Psoriasis is linked to stress

TRUE
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.

Dermocorticoids are recommended for treating itchiness.

TRUE
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.

A woman who did not get pigmentation marks during her first pregnancy is not at risk for her second pregnancy

FALSE
All women are at risk for pigmentation marks and pregnancy mask, regardless of whether they had them during their first pregnancy.

Artificial UV tanning sessions let you tan in complete safety

FALSE
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

FALSE
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.

FALSE
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

FALSE
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.

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.

Some skin types restore better than others

TRUE
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.

It is normal to experience tight, pulling sensations after a shower

TRUE
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.

TRUE
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.

Men's skin is thicker than that of women.

TRUE
Men have thicker skin than women, both in the dermis and the epidermis. On average, the skin on men's faces is 22% thicker.

The sun cures acne

FALSE
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.

A deterioration in the quality of the complexion is a sign of ageing

TRUE
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.

A BB cream is a make-up product

True
and
False

Only dry skin is reactive

False

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

FALSE
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.

Dry skin is incurable

False

To put an end to dry skin, it is important to keep hydrated

False