in brief
- Customer language can reveal how buyers describe problems, alternatives, and objections.
- Treat that wording as input to message hypotheses, not proof that a product claim is true or an advertisement will perform.
- Preserve context, distinguish quoted testimony from analyst copy, and test understanding and credibility with relevant buyers.

Turn customer language into credible marketing by preserving the buying context, identifying the problem behind the wording, and checking what the product can substantiate. A vivid phrase is useful only if it means what the brand intends to say.
A buyer might call a cleaner “less hassle.” Before using that idea, establish which task became easier. Was it removing a stain, handling the bottle, or finding a refill? Those experiences support different message hypotheses.
how do you collect useful voice-of-customer evidence?
Look for accounts of recent choices, recurring problems, workarounds, and objections. Retain the source and date for editorial checking. Separate an exact quotation from a paraphrase. If a quote is shortened, do not remove the condition that gives it meaning.
Group related problems without erasing different use situations. A single adjective can hide several experiences. “Convenient” might refer to pack size, availability, preparation time, or payment. The message needs the specific meaning relevant to the product.
Buyer wording can help a message sound familiar. It cannot supply product proof the brand does not have.
research note from relvo
what can domino’s illustrate about message credibility?
Domino’s December 2009 release linked its recipe change with feedback and described specific product changes. The message concerned a changed offer rather than wording alone.
Our interpretation is that a claim is stronger when a buyer can connect it to a concrete product experience. This example does not prove that candid advertising always works or that a similar campaign would improve another brand’s sales.
how do you move from language to a testable message?
| stage | hypothetical snack example |
|---|---|
| Buyer account | A buyer reports difficulty finding a filling option during travel. |
| Problem to investigate | A portable snack for a particular travel situation. |
| Message hypothesis | A convenient option for that situation. |
| Proof needed | Relevant product facts and an experience consistent with the claim. |
| Research question | Do intended buyers understand and believe the promise? |
| Behavioral question | Does the offer change a relevant purchasing action? |
The example is invented to explain the method. It is not a real buyer quote or evidence of a product benefit. Avoid turning an analytical paraphrase into a testimonial.
what should you test before publishing a claim?
- Ask participants to explain the message in their own words.
- Check what they believe the product promises.
- Investigate what makes the promise credible or doubtful.
- Compare the message with the actual product and supporting evidence.
- Test the relevant action separately from comprehension or liking.
A message can be clear and unbelievable, appealing and misunderstood, or credible but irrelevant. Keep those judgments distinct instead of collapsing them into one approval score.
For advertising that uses reviews or endorsements, consult the FTC’s review and endorsement guidance where relevant to your market. A selected anecdote should not be used to imply an unsupported general result. Local requirements and the actual claim also need checking.
where does relvo fit in this work?
relvo organizes public buying accounts and their stated reasons at group level. That can help identify language and gaps worth investigating. It does not currently provide ad testing or a demonstrated ROAS improvement. Company exports can make the material more specific to the brand.
See how to improve purchase-intent questions before treating a positive response to the wording as evidence of sales.
Bring a message question with the buying situation and the claim you need to examine. Bring that question to relvo.