Dermatologist

Specializes in skin, hair, and nail conditions — from acne to skin cancer.

Did you know?

Your skin is the largest organ in your body, weighing about 3.6 kg

Biology: Tell a harmless mole from one that might be skin cancer by how its cells grow.
Chemistry: Choose creams and treatments that calm eczema or clear acne without harming skin.
Anatomy: Understand the layers of skin, hair roots and nails to treat problems at their source.

Ferdinand Ritter von Hebra: Austrian doctor who founded modern dermatology in Vienna in the 1840s by classifying skin diseases.

Fill a shallow bowl with water and sprinkle pepper all over the top. The water is your hand and the pepper is dirt and germs.
Dip a dry finger into the middle, then a finger wet with plain water. Watch what the pepper does and write it down.
Now put a little soap on your fingertip and touch the middle of the water again. Watch the pepper shoot to the edges.
Write one sentence on why washing with water alone is not enough, then wash your hands properly with soap.

Public health teams design handwashing campaigns and track how well they cut the spread of infections in schools, hospitals and whole towns.

Also try: Count your breaths before and after exercise.

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