"Why do some women have straight hair and others curls?" asks an intertitle. C/U of the back of a woman's head. She has straight shoulder length hair. She turns her head and looks over her shoulder at the camera. We then see hair being combed. It looks like the back of a woman's head but suddenly the head is thrown back and we see that the woman was leaning forward and brushing her hair downwards. She leans back and fluffs up her curly hair.
"Scientists have found out the secret - in the laboratory." C/U of a scientist type looking through a microscope. A straight hair is placed between two glass plates and then put under the microscope. C/U of this process. We see the enlarged hair under the microscope. Under high power we are able to see the six layers that make up the hair, and also the shape of the root. Shot of the hair under the microscope and the root (this actually looks like a drawing, not a real microscope shot.) "When a hair is pulled, a tiny section of scalp tissue comes with it. The micro-drawing shows how the hair "sets" in your scalp." A drawing is shown.
When a curly hair is put under the microscope in cross-section we can see that the "core" is oval, and not in the centre. C/U of a curly hair being put onto the glass. We see what is purported to be the hair under the microscope. A straight hair reveals a round core - not an oval one. A cross section of the scalp is used to show how straight and curly hair grows differently. C/U of hair being combed and curled into ringlets.
Was an item in Eve's Film Review issue number 482.