Business is all about negotiation, and it will be up to our celebrities in this challenge to use not only their beauty and brains, but their gift of the gab.

The beauty industry turns over an estimated $160 billion-a-year worldwide. Now it's time for our final five celebrities to powder their nose and make up, as their time is running out to raise money for their charities.

Our final four celebrities will race against the clock to sell, serve and advertise in this 'Amazing Race' style challenge. This challenge will test celebrities' skills in sales, service and advertising.