Lot of people do face problems with yellow teeth. The reason for yellow teeth can be less calcium, smoking or coffee. Some people face problems like yellow to faint yellow teeth also because of too much brushing or using products which harm teeth. While baking soda or peroxide can make your teeth white but it is not recommended. Dentists world over do not recommend use of such pure form substances on teeth as they harm your teeth in longer run.

Not all whitening trays are good, in fact many people have complained about irritation and pain with trays. Lot of people want white teeth so that they can smile big and don’t get embarrassed while talking to friends and colleagues. Such people can use teeth whitening pens which are 100% safe for your teeth. The best thing about these products is that you can easily get FREE trial to have white teeth. You may order your free trials and have white teeth. You just have to pay for the shipping and handling. Its always better to try before you buy and I am sure it will work for everyone including you.

BTW the website where you can get such free samples is http://www.freeteethwhiteningsamples.com/ – Its the first top product listed there.

I am not promoting the website nor am I associated with it in any manner. Just trying to help someone who is worried about bad/yellow teeth.

Hope this helps.

Thanx

Whitening Teeth with Lemon Juice
Whitening Teeth with Wood Ash
Whitening Teeth with Strawberries
Whitening Teeth with Baking Soda

But be careful, some may help, but most home remedies will damage your teeth.

Also have a look at the source link article for more information.