Why most QR codes on packaging fail
A QR code printed at the wrong size, in the wrong color or in the wrong position. Linked to a destination that does not deliver what the scan implies. Any one of these is enough to make a QR code effectively invisible.
Most QR codes on US supplement and wellness packaging fail not because people do not want to scan them, but because the execution discourages the scan or the destination disappoints it. A scan that lands on a generic homepage is a wasted opportunity. A scan that lands on something genuinely useful for that specific product at that specific moment earns the engagement.
Placement and contrast
A QR code needs sufficient contrast to scan reliably. Dark code on a light background is the standard. A QR code printed in a brand color that is similar in tone to the background will fail. Do not ask the designer to make the QR code look like part of the design at the expense of scannability.
Size matters. A QR code under 2cm square will fail to scan reliably on most phone cameras at a comfortable reading distance. On a secondary box, 2.5cm to 3cm is a reliable minimum. On a shrink sleeve on a vial, constraints are tighter. Raise the size question with your specialist during the brief.
Placement should be where the buyer naturally looks after opening the product. On a secondary box, the back panel is the standard position. On an insert, center or bottom of the primary panel. On a vial label, the back is correct.
What to link to for a US wellness and clinical audience
For peptide and wellness products sold in the US market, the highest-value QR destination is a product protocol or usage guide. This is information the buyer needs and does not have from the packaging alone. A scan to a well-structured usage guide earns the engagement because it delivers something genuinely useful.
The second highest-value destination is a reorder page specific to the product. Not the homepage. Not a category page. The specific product reorder URL. This places the next purchase action at the moment the buyer is holding the current product.
Avoid linking to a general website, a social feed or a page that requires the buyer to navigate further to reach the information they wanted. The fewer clicks between the scan and the destination, the higher the completion rate.
When not to use a QR code
Not every product needs a QR code. If there is no destination that genuinely serves the buyer at the point of scan, do not include one. A QR code linked to a thin page communicates that the brand has not thought about what it wants the buyer to do next.
If you are adding a QR code because competitors have them, that is not a sufficient reason. Add one because you have a destination that earns the scan and drives an action that matters to your business.