Reason-why

The pattern

This still is filed under Reason-why.

Define

A specific reason the offer is priced, timed, or structured this way. Not a mood. A reason.

Mechanism

Justification. A concrete cause makes a claim feel earned. Because we overbought. Because the season ends Sunday.

Verdict

The price or the ask looks irregular

Why it works

The copy gives dull teeth one physical cause the reader can feel with the tongue: a viscous film that clings, absorbs stains and holds acid against the teeth. Once film is the villain, Pepsodent's three stated effects read as the logical answer rather than a boast, and the headline They Fight Film ties pretty teeth to that one habit. The free 10-Day Tube then asks the reader to check the reason personally: notice the absence of the viscous film and watch the teeth whiten.

The big idea

Pretty teeth come from fighting film, the sticky coat that dulls and decays teeth, and a free 10-day tube of Pepsodent lets the reader see it happen.

The offer

A free 10-Day Tube of Pepsodent by mailing the coupon, only one tube to a family. Large tubes sold by all druggists.

The proof

Long research by dental science, authorities who proved its efficiency, leading dentists nearly all the world over urging daily use, and millions of users of some forty races.

Lines from the ad

They Fight Film- They who have pretty teeth

Why teeth are cloudy

Do this to learn what millions know - the way to whiter, cleaner, safer teeth.

Steal this when

Your product fixes a problem people can see but cannot explain, and you can name a physical cause they can check for themselves during a free trial.

The emotion

Written to Curiosity. It makes the Say move.

Under the line Why teeth are cloudy, it names the cause, a sticky film that holds stains and acid, then offers a free 10-day tube so the reader can watch the film go.