Embossed letter

We needed to encourage dental professionals to try Listerine Advanced Tartar Control, and then recommend regular use of it to their patients.
Dentists had never seen anything like this before. The mailing was pure white; it appeared to have nothing on it. On closer inspection, the recipients could see the letter copy was written in an embossed font - as opposed to being printed in black ink. It acknowledges the importance of keeping your teeth white and how hard dentists work to help their patients achieve this. Particularly relevant to this sceptical audience, it also pointed out the benefits of Listerine in combating tartar. The letter directs to a fold-down reply slip for requesting samples and subscription to a magazine.
The mailing was sent to 25,404 Dental Professionals, with a target of 2,032 responses (8%). We actually received 3,487 responses (172% over the target). This led to an additional 34,920 opportunities for Dentists to recommend Listerine Advanced Tartar Control and to supply samples to their patients. With 83,688 recommendations overall, this level of recommendation will translate into £67,260.05 in patient sales of Listerine (in our first year), giving us a positive ROI of £2.99 per £1 of budget spent, for the campaign.