A well placed product, tee or voice over can do wonders for a charity trying to make a difference. Here are 10 Celeb/Charity endorsements that prove goodness still exists in Hollywood.

1. Switchfoot/To Write Love On Her Arms

Jon Foreman wore the first TWLOHA shirt eight years ago and still promotes the non-profit today, raising awareness of depression, addiction, suicide and self-injury.

2. Brittany Snow/ Love Is Louder

Brittany worked with MTV and the JED Foundation to start the 'Love Is Louder' movement. With a simple message on her hand, it tells people they are not alone.

3. Selena Gomez/ The Salvation Army

Sel turned heads when she performed for The Salvation Army's 123rd Red Kettle campaign during the Thanksgiving half time show at a Dallas Cowboys game.

4. Macklemore & Ryan Lewis/ Characters Unite USA

The Grammy award winning duo kicked off 2014 with another charity endorsement. This time, they filmed a PSA for Characters Unite USA to their hit 'Same Love' promoting unity against discrimination and hatred.

5. Mumford & Sons/ Invisible Children

Before the world knew about KONY2012, Mumford & Sons joined Invisible Children to inform a new audience about the LRA conflict in Central Eastern Africa.

6. Justin Bieber/ Typhoon Haiyan relief

Proving he's more than a pretty face and angelic vocals, the Biebs visited survivors of Typhoon Haiyan in the Philippines last December, seeking to raise $1 million and joining them in a game of basketball.

7. One Direction/ Comic Relief

Raising over 2 million pounds for Red Nose Day 2013, the lads from the UK released the single, 'One Way or Another' to benefit Comic Relief.

8. Jennifer Lawrence/ Jennifer Lawrence Foundation

Proving that she gets cooler by the day, J-Law supports numerous charities including the Special Olympics and Make- A- Wish through the creation of her very own foundation.

9. Beyonce/ Chime For Change

She's living proof that women rule the world, so it makes sense that Queen B would perform in Gucci initiative The Sound of Change Live concert to promote education, health and justice for all females.

10. Taylor Swift/ Everything

Named by DoSomething.Org as the most charitable Celeb Gone Good two years running, T-Swift never seems to stop giving. In 2013, she donated $100,000 to the Nashville Symphony while also supporting Centrepoint, St Jude's AND the Red Cross.