Relax with a face mask.
There's no need to spend a fortune on beauty products: use the ingredients in your kitchen to make a simple hydrating mask. Using a fork, mash a ripe banana with a tablespoon of honey. Apply all over your face. Lie back and relax for 20 minutes. Wash off the mask with warm water. Apply a small amount of facial cleanser then wash off. Pat your face dry and apply your usual moisturiser.
Ditch those panda eyes
Dark circles under your eyes may be caused by a lack of sleep, stress, dehydration or an allergy, but you can temporarily get rid of them by popping a cooled, used teabag over each of your closed eyes for 15-20 minutes. The tannin in the teabags helps to remove the puffiness and reduce the appearance of dark circles. If you don't have teabags, a couple of cold teaspoons will also do the trick. Place the back of the teaspoons over your closed eyes and hold them there for 30 seconds.
Take a shower and wash your hair
If you've ever walked in late to a packed classroom, you will have experienced the overpowering odour of smelly socks, sweaty armpits and feet. Don't follow that crowd. Jump in the shower and scrub yourself thoroughly with a mild soap, concentrating on troublesome areas such as armpits, groin and feet. Don't forget to wash your hair with a mild shampoo and conditioner, if you have time.
Use deodorant and antiperspirant
Overproductive sweat glands during puberty can attract bacteria and make sweat even smellier during teenage years. Be kind to your date, and layer on a combo of antiperspirant and deodorant. The former helps reduce sweating, while the latter prevents a stink when you do sweat.
Trim those nails
Half-bitten, broken and dirty fingernails are a definite no-no. Trim them straight across and file with an emery board to smooth any sharp edges. Clean under your nails with soap and water to get rid of any trapped dirt; use a nail brush if necessary.
Go easy on the perfume/aftershave
Less is more with any type of scent. Please don't spray it all over your clothes, hair or bag. Dab a little perfume on your pulse points - behind your earlobes, the insides of your wrists and either side of your neck - or spray one or two spritzes into the air and walk into it. As for aftershave, put a small amount - around a quarter of a teaspoon - onto the palm of your hand. Rub your hands together, then apply to your shaved areas and down your neck. Try to apply both perfume and aftershave at least 15 minutes before you go out to give the fragrance some time to evaporate, so the smell won't be overpowering.
One last thing: guys, especially, do put on clean clothes; a toothpaste-stained sweatshirt and dirty jeans will not impress.