La Diaphane rice powder (Sarah Bernhardt endorsement) - poster
The pattern
This still is filed under Celebrity endorsement.
Define
A named, recognizable person lends their reputation to the claim. The name is the proof.
Mechanism
Transferred authority. The reader believes the person first, the product second. Fame or office does the work a peer testimonial does not.
Verdict
The endorser is actually known to the buyer
Why it works
The endorsement is structural, not decorative: the lockup is ordered brand, product, person, so the reader learns what it is before learning whose it is and the star lands as confirmation rather than as the subject. The figure is drawn mid-application with the box visible, which fuses the testimonial and the demonstration into one gesture. The painterly handling with raw paper showing through is doing product work too, an open weightless surface is the visual analogue of diaphane, so the technique itself argues the claim the brand name makes.
Steal this when
Use this shape for any celebrity or expert endorsement where the name is stronger than the product: lead the lockup with the brand, put the endorser third, and show the person using the thing rather than holding it up. It is also the model when a brand name describes a sensory quality you can render in the artwork itself.