General information, not a diagnosis Method and limitations

01Daily prevention

Hand hygiene: when and how to wash them

Hand hygiene reduces the transfer of microorganisms between people, food, objects and mucous membranes. The efficiency depends mainly on the right time, complete friction and proper drying.

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Adult washes hands thoroughly with soap under running water in a kitchen
AI-generated illustration, not evidence of a health event. The product counts, but the cover of the palms, back, spaces between the fingers, thumbs and ends of the fingers makes the difference.

AnswerThe essential first

In practice

The short answer

Use water and soap when the hands are visibly dirty, after the toilet and before preparing or eating food. In the absence of visible dirt, a hydro-alcoholic solution containing at least 60% alcohol may be a practical alternative. Cover all surfaces of the hands and continue the gesture about 30 seconds.

See steps ▼
5

Priority Community moments

Before the food, after the toilet, after coughing or being mowed, and as soon as the hands are dirty.

30 s

practical friction marker

Duration highlighted by Public Health France to cover hands methodically.

≥ 60 %

alcohol if the hands are not dirty

Minimum WHO threshold for an alternative hydro-alcoholic solution.

01Understanding the situation

The times that really change the risk

Washing your hands continuously is neither necessary nor desirable. Target transitions where hands can carry microorganisms to mouth, eyes, nose, food or other person.

01

Before food

Before cooking, eating, feeding a child or helping a person to feed.

02

After the toilet

After going to the toilet, changing a diaper or handling fecal matter.

03

After respiratory secretions

After coughing, sneezing, sneezing or helping a sick person.

04

After an exhibiting activity

After the waste, cleaning, an animal, soil or a surface clearly soiled.

05

As soon as they're dirty

The visible dirt is directed towards water and soap, not just to a hydro-alcoholic solution.

02Step by step

A simple method, surface by surface

If possible, remove the jewellery that interferes with the gesture. Water temperature is less important than soap, friction and rinse.

  1. Moisture and soap

    Moisten hands, apply enough soap and start friction.

  2. Palms and backs

    Rub palm against palm, then each back of hand with the opposite palm.

  3. Fingers and spaces

    Interlace your fingers and insist on each other, where the quick passage often forgets areas.

  4. Inches, nails and fingertips

    Surround each thumb and rub the ends of the fingers into the opposite palm.

  5. Rinse

    Remove the soap under running water without unnecessarily touching the walls of the sink.

  6. Dry

    Dry thoroughly with a clean towel, a single-use hand wipe or open air.

03Decision points

Choosing the right way

The context determines the right measure. Use these markers to choose the next action and when to ask for help.

Water and soap

To be preferred if hands are visibly dirty, after toilets, before food and when the context requires it.

Hydroalcoholic solution

Useful on dry hands and not visibly dirty. Use enough product to keep hands moist throughout the friction.

Care or professional setting

Follow the protocol of the place: indications, product, duration and equipment may differ from daily.

In practiceObserve and understand

A complete technique at the right moments

Rubbing time matters, as do the areas covered and what hands touch afterwards. CDC describes five steps for everyday handwashing; healthcare protocols have their own requirements.

Handwashing: five steps
Handwashing: five steps
Read the steps as text
  1. Wet

    Clean running water, warm or cold.

  2. Lather

    Palms, backs, between fingers, under nails.

  3. Scrub

    At least 20 seconds.

  4. Rinse

    Under clean running water.

  5. Dry

    Clean towel or air drying.

A complete technique at the right moments — explanations and limits
SituationPoint to watchWhy
Preparing a mealWash again after handling raw food.Clean hands can become contaminated again during preparation.
After the toiletProvide soap, water and clean drying facilities.Wash before touching food or shared objects.
Visibly dirty handsPrefer washing with soap and water.Hand sanitiser does not remove all dirt.
Keep in mind

A timer does not certify technique. Check that all hand areas are covered and consider contacts after washing.

References for these explanations

Sources consulted on . Examples and diagrams are educational; the original guidance defines its scope.

04Not to be done

Frequent errors

  • Rinse immediately without frictioning all surfaces.
  • Forget the thumbs, the spaces between the fingers and the fingertips.
  • Wipe the hydro-alcoholic product before it has dried.
  • Use hydroalcoholic solution on visibly dirty hands instead of washing them.
  • Multiply aggressive washes without protecting irritated or damaged skin.
Important limitA cracked or very irritated skin can become painful and make hygiene more difficult. Use context-appropriate products and seek professional advice if lesions persist. In the care setting, apply the prevention protocols for institutional infections.

Frequently Asked Questions

Antibacterial soap or ordinary soap?

For routine hygiene, the WHO recommendations highlight ordinary soap and water. The quality of friction, rinsing and the right time are essential. A care setting or professional activity may impose a specific product.

Does hydro-alcoholic gel always replace washing?

No. It is an effective alternative when the hands are not visibly dirty. Water and soap remain indicated when dirt is present and in several everyday situations, including after toilets and around food preparation.

Should we use hot water?

No. Comfortable water is enough. Too hot water can irritate the skin; soap, friction on all surfaces, rinsing and drying are more important.

Do gloves provide hand hygiene?

No. Gloves can be contaminated, torn or contaminated with the hands when removed. Hand hygiene remains necessary at times foreseen by activity and protocol.

Check implementation

These points serve as a reminder to prepare the action. The boxes are not registered.

Sources used

These institutional references provide a means of checking the guide and accessing the full recommendations.

PratiqueCheck before deciding

Votre liste de vérification

  • Repérer les moments liés aux repas, aux toilettes et aux soins.
  • Vérifier l’accès à l’eau, au savon et à un séchage propre.
  • Choisir le lavage quand les mains sont visiblement sales.
  • Éviter de confondre port de gants et hygiène des mains.

Use alongside the guide’s steps, limitations and sources.

Folder Illustrations

Images generated by artificial intelligence to put the subject in context.

Mains mouillées recevant du savon près d’un lavabo. AI-generated illustration.
Apply soap — Wet hands receiving soap near a sink.
Image generated by artificial intelligence. Scene generated by IA to illustrate a hand washing step.
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