Dermatologists say using moisturiser can hydrate skin and plump up fine lines, which may help your complexion look smoother and therefore younger. The British Skin Foundation says moisturiser can protect your skin from the elements as well as prevent drying out. However, the foundation warns not to judge moisturisers by their price as even the less expensive ones do the same job.

Long-term sun exposure and damage from the sun's ultraviolet light leads to photoageing, which causes most wrinkles and undesirable skin changes, including skin cancer.

Of course, staying out of the sun and wearing UV-protective clothing are the best ways to prevent wrinkles, but most of us are unlikely to really do that. So, using a broad-spectrum sunscreen (offering UVA and UVB protection with an SPF of at least 15, the NHS recommends) every day is the most effective and realistic way to protect skin and look younger.

Even a small amount of sun time can age skin and increase cancer risk. If you're only outside briefly or driving in a car, foundation or a tinted moisturiser with SPF protection is probably enough. This is also true if you're inside but sitting near a window; UVA rays, which cause ageing, can penetrate glass.

Smiling, along with squinting, frowning and other repetitive facial expressions, makes fine lines and wrinkles more prominent over time because skin loses elasticity as we age.

Products with retinoids, alpha-hydroxy acids, and azelaic acid have been shown to treat signs of ageing and make skin look younger. Studies show that retinoic acid, which is derived from vitamin A, can partially reverse photoageing changes. Azelaic acid and alpha-hydroxy acids (AHAs) are natural-based acids that can be used to exfoliate and lighten discolourations.

It's no secret that smoking can age you. There is strong evidence linking the habit to premature skin ageing. One study showed the appearance of facial wrinkles under a microscope in smokers as young as 20. The British Skin Foundation says smoking causes wrinkled, leathery skin. It’s thought that this is due to the breaking down and reduced production of collagen, which gives skin its elasticity. However, smokers who quit the habit show less facial wrinkling and improved skin tone when they stop, so that's another reason to stub out the cigarettes.

Women get more wrinkles and deeper lines around the lips (called perioral wrinkles) than their male counterparts, according to researchers in the Netherlands. Men have more sweat glands and better circulation around the mouth, which may explain why they are less prone to these wrinkles.

Rubbing your eyes to get rid of mascara and eyeliner won't give you wrinkles. But if you aren't gentle when you whisk away eye make up, you can irritate the skin around your eyes and that can temporarily make it look wrinkly. For best results, moisten a cotton ball with eye make up remover and gently wipe away eye make up every night before you go to bed.

Going to bed with a face full of make up won't make you wrinkly, but it really isn't good for your skin. Some make up can clog your pores and that can lead to a breakout of spots. No matter how tired you are, take a few minutes to wash your face and moisturise before bed.