Hand Hygiene: Your Simplest and Strongest Health Shield

Hand hygiene is the process of removing disease-causing microorganisms from your hands using soap and water or alcohol-based sanitizers. Practicing the correct handwashing technique is the simplest, most effective way to stop a wide range of health issues in their tracks—from respiratory infections to digestive system illnesses. Throughout the day, the germs on the surfaces we touch are easily transferred to our mouth, nose, and eyes via our hands. That is why keeping your hands clean plays a critical role in breaking the chain of infection.

• Hands should be washed with soap and water for at least 20 seconds.
• According to World Health Organization standards, the spaces between fingers, thumbs, and nail beds must be rubbed thoroughly.
• Frequent handwashing drastically reduces the risk of transmitting illnesses like the flu, common cold, RSV, and diarrhea.
• When soap and water are unavailable, opt for hand sanitizers containing at least 60 percent alcohol.
• To prevent skin dryness caused by frequent washing, you can apply a moisturizing cream after each wash.

The Importance of Handwashing and Infection Prevention

In our daily lives, we touch countless shared surfaces—door handles, elevator buttons, shopping carts, or the handrails on Istanbul's bustling public transport. Viruses and bacteria that can survive on these surfaces for hours, or even days, inevitably end up on our hands. Without even realizing it, people touch their faces, eyes, or mouths an average of 20 to 25 times an hour. This creates a direct doorway for microorganisms to enter the body.

Washing your hands with soap and water provides much more than just mechanical cleaning. The structure of soap molecules consists of a water-loving (hydrophilic) head and a water-repelling (hydrophobic) tail. These hydrophobic tails wedge themselves into the lipid (fat) envelope coating many viruses—including the flu or coronavirus—and tear it apart. Once the envelope is ruptured, the virus is neutralized and simply washed away with the running water. In the fight against infections, this basic chemical reaction works faster and more protectively than even the most advanced medications.

Which Diseases Does Hand Hygiene Prevent?

Regular and proper hand cleaning prevents the spread of many contagious diseases commonly seen in the community. Respiratory tract infections top this list. The flu (influenza), the common cold, adenovirus infections, and the RSV virus—which severely affects babies and young children, especially during the winter months—are usually transmitted when dirty hands touch the respiratory tract.

Hand cleanliness also takes the leading role in preventing diseases that affect the stomach and intestinal system. Pathogens like norovirus, rotavirus, salmonella, and E. coli, which cause diarrhea, vomiting, and severe abdominal pain, spread through poor hygiene after using the toilet or via food prepared with unwashed hands. Furthermore, eye infections like conjunctivitis (pink eye) and various skin infections caused by staph bacteria can be largely prevented simply by keeping your hands clean.

Proper Handwashing Technique: The World Health Organization Steps

To effectively eliminate germs, merely wetting your hands or soaping them for a couple of seconds is not enough. The World Health Organization (WHO) has established a specific standard for handwashing steps. The entire process should take between 20 and 30 seconds. For an effective clean, you should follow these steps in order:

• Wetting and Soaping: Wet your hands with clean, running warm or cold water, and apply enough soap to cover all surfaces.
• Palms: Rub your palms together to work up a good lather.
• Back of Hands: Rub the back of your left hand with your right palm, lacing your fingers together. Repeat the same process for the back of your right hand with your left palm.
• Between Fingers: Interlock your fingers with your palms facing each other and clean between them using up-and-down motions.
• Back of Fingers: Cup your fingers and interlock them into the opposite palm, rubbing the backs of your fingers against your palms.
• Thumbs: Clasp your left thumb in your right palm and rub it in a circular motion. Do the same for your right thumb. Thumbs are often the most neglected areas during washing.
• Fingertips: Clean your nail beds by rubbing the fingertips of your right hand in a circular motion against your left palm. Repeat for the other hand.
• Rinsing and Drying: Rinse your hands thoroughly under running water. If you are in a shared public space, dry your hands with a single-use paper towel and use that same towel to turn off the faucet.

When Should We Wash Our Hands?

To protect your health, it is essential to wash your hands not only when they are visibly dirty or stained, but also after risky contact, even if they look clean. The main situations in daily life where hand cleaning is an absolute must include:

Hands should be washed before starting food preparation, during preparation (especially after handling raw meat, chicken, or fish), and right before eating. Using soap and water is mandatory before and after using the toilet, after changing a baby's diaper, or after helping a child with potty training. After coughing, sneezing, or blowing your nose, you must clean your hands immediately to prevent spreading droplets to your surroundings.

Additionally, washing your hands should be the very first thing you do when returning home from outside, after using public transport, returning from grocery shopping, or visiting a hospital. Care should also be taken to clean your hands after touching pets or stray animals, handling animal feed or waste, and taking out the trash.

Rules for Using Hand Sanitizer

In situations where soap and water are out of reach, using a hand sanitizer is a practical alternative to reduce the risk of infection. However, for sanitizers to be effective, certain rules must be followed. The chosen product must contain at least 60 percent alcohol. Products with a lower alcohol content do not kill germs; they merely slow down their multiplication.

When using sanitizer, apply a generous amount to the palm of your hand and rub it over all surfaces—including between the fingers, the back of the hands, and the thumbs—just like the handwashing steps. You should continue rubbing until your hands are completely dry (about 20 seconds). Wiping your hands with a paper towel or washing them before the sanitizer dries will destroy the product's effectiveness. The most important thing to know is that sanitizers do not work when hands are visibly dirty or greasy. Moreover, alcohol-based sanitizers fall short against certain resilient microorganisms like norovirus and chemical agricultural pesticides; in these cases, soap and water must be used.

Dry Skin and Contact Dermatitis Due to Frequent Washing

While washing hands frequently is necessary to ward off infections, over time, this can damage the skin's natural barrier. Soaps and hot water strip away the protective lipid (fat) layer on the skin's surface. When this barrier weakens, the skin loses its moisture, leading to dryness, redness, itching, and cracking. Medically known as contact dermatitis, this condition can create an ideal environment for bacteria to settle in through micro-cracks in the skin.

To protect skin health, it is safer to wash hands with warm water rather than very hot water. After washing, gently patting your hands dry with a towel instead of rubbing them vigorously reduces irritation. The most effective way to prevent dry skin is to use a moisturizer. Applying a fragrance-free moisturizing cream containing ceramides, glycerin, or petrolatum while your hands are still slightly damp after washing helps repair the skin's barrier function and prevents eczema.

Hand Hygiene in the Hospital Environment

In a hospital setting, hand hygiene is a vital procedure for the safety of both patients and healthcare professionals. Patients admitted to hospitals often have weakened immune systems and are more vulnerable to hospital-acquired infections. Therefore, hand cleaning is the very first step of infection control in healthcare facilities.

The World Health Organization has established a five-moment rule for hand hygiene among healthcare workers: before touching a patient, before clean or aseptic procedures, after body fluid exposure risk, after touching a patient, and after touching patient surroundings. It is not just medical staff; visitors and relatives coming to the hospital must also follow these rules. Disinfecting your hands before entering and upon leaving a patient's room directly impacts the healing process.

How to Teach Children the Habit of Handwashing

Hygiene habits acquired in childhood build a health shield that lasts a lifetime. When explaining the importance of handwashing to children, rather than scaring them, it is much more effective to make them feel like little heroes washing away the germs from our bodies. Using a safe step stool so they can comfortably reach the sink and choosing nice-smelling soaps in their favorite colors makes this process fun.

Children generally struggle to follow the 20-second rule. To help them complete this time, you can ask them to sing a short, favorite song while washing their hands. Being a role model by joining them before meals and when coming in from outside ensures this behavior turns into a lasting routine. For detailed information, you can read our article titled how to teach children the habit of handwashing.

Infection Control and Procedures at BHT CLINIC

The Clinical Microbiology and Infectious Diseases department at BHT CLINIC İstanbul Tema Hastanesi implements top-tier infection control measures in accordance with international JCI accreditation standards. To protect the health of our inpatients, visitors, and staff, disinfection and hygiene rules are meticulously followed across all areas of our hospital.

For febrile illnesses, respiratory tract infections, rash-causing diseases, or suspected infections of unknown origin, we use our advanced laboratory infrastructure to provide a rapid, accurate diagnosis and create the most appropriate treatment plan for you. In infection cases requiring immediate intervention, you can visit our 24/7 emergency department. To get support from our expert medical team, you can safely book an appointment through our website or call center.

Frequently Asked Questions

Is hand sanitizer or soap more effective?

If your hands are visibly dirty, greasy, or muddy, soap and water is always the most effective method. Soap physically removes dirt and germs from the skin. If there is no visible dirt and water is unavailable, hand sanitizers containing at least 60 percent alcohol can be safely used to quickly neutralize the vast majority of germs.

Does washing hands with hot water kill germs better?

No, washing your hands with water as hot as you can stand is no more effective at killing germs than warm or cold water. Water hot enough to actually kill germs would burn your skin. On the contrary, constantly using hot water melts away the skin's natural oil layer, increasing the risk of dryness and eczema. Using warm water with soap is ideal.

Is it mandatory to use antibacterial soap?

It is not mandatory to use antibacterial soap in daily life. Research shows that normal liquid or bar soaps, when used with the correct technique, are just as effective as antibacterial soaps. Furthermore, the unnecessary use of antibacterial products can lead to bacterial resistance.

How can children be taught the habit of handwashing?

The best way to instill this habit in children is to be a good role model for them. To make the handwashing process enjoyable, you can use colorful soaps, sing fun songs that last for 20 seconds, and provide safe step stools so they can easily reach the sink.

How long should handwashing take?

For effective hand cleaning, the soaping and rubbing process should last at least 20 seconds. The entire process—including wetting, soaping, rinsing, and drying the hands—should take an average of 40 to 60 seconds to complete.

This article is for informational purposes only; please consult your physician for diagnosis and treatment.