Don't let nails go: Not into manicures and pedicures? No worries. Just make sure to keep nails clean and the same length. If you do want to paint them, don't keep the polish on until half of it's chipped away. Also, there's nothing worse than too-long toenails. Keep nails clipped between pedicures!

Never skip sunscreen: The first beauty product you should apply every day is sunscreen, even if it's cloudy or rainy outside. Why? Good habits start young and if you use sunscreen now, you'll have gorgeous skin when you're 50, 60, 70. Remember, the sun's UV rays can penetrate clouds and car windows.

Natural hair is always hot: If you have super dark hair, lighten your look by going a shade darker or getting lighter highlights. Blonde? Try highlights, especially framing the face. You see too many teens lightening their hair several shades and most of the time it ends up looking super-tacky. The trick is to let people assume you were born with sun-kissed hair, not that you gave yourself a bad dye job from a bottle.

Less is more: Ever notice how some of your friends look best with no makeup at all? No matter your age, too much makeup can make you look worse. If you wear foundation, powder, blush, liner, mascara, eyeshadow, lip liner and gloss on an everyday basis, then you're overdoing it. Tone it down: All you really need is a great mascara, concealer for blemishes and gloss. Add a pop of blush or bronzer in winter.

Play up your lips or your eyes, never both: If you are wearing heavy eye makeup, go for nude lips with just a bit of gloss. Prefer the drama of dark lipstick? Keep the face light and wear only mascara on your eyes and a light eyeshadow. Don't heavily line your eyes either.

Skip the foundation: If you have acne the first thing you want to do is slather on the thick foundation. Don't. Not only will it cover up your natural beauty, but foundation on a teenager looks anything but natural. Instead, cover up blemishes with concealer, then follow with a powder or tinted mosturiser. Tinted moisturisers are much lighter than heavy foundations.