How to Write Packaging Copy That Converts: Tips for Product Labels and Boxes

Packaging copy must work in under 3 seconds — the average time a shopper glances at a new product on shelf. Good copy is not clever; it is clear. It answers: what is this, why should I care, can I trust it? Here is how to write copy that converts.

Front Panel Hierarchy

The front panel (principal display panel) must communicate in this order:

1. Brand name: Large, distinctive, immediately readable from 1.5 m.
2. Product name: What it is. Not what it does — what it IS. "Rosehip Face Oil" not "Age-Defying Cellular Renewal Essence."
3. Variant / key differentiator: Fragrance, size, strength, edition.
4. Primary benefit claim: One claim, maximum. "Fragrance-free" or "50% less plastic" — not both.

Benefit vs Feature Language

Features describe the product. Benefits describe the outcome for the user. "100% pure essential oil" is a feature. "Absorbs in 30 seconds, no greasy residue" is a benefit. Shoppers buy benefits. Use features to substantiate benefits, not as the headline.

Claims Compliance

• US: FTC Green Guides govern environmental claims. "Eco-friendly" without qualification is deceptive per FTC guidance. Specify: "Made with 85% recycled paperboard."
• EU: Green Claims Directive (2024) requires substantiation documentation for all environmental claims.
• UK: ASA and CMA enforce "made from X%" claims — the percentage must be verifiable and not cherry-picked from one component.
• All markets: Medical claims on cosmetics trigger drug regulation. "Prevents wrinkles" is a drug claim in the US. "Reduces the appearance of fine lines" is a cosmetic claim.

Back Panel Structure

Top third: key benefits expanded (3–5 bullet points, 6–8 words each). Middle: usage instructions or ingredients. Bottom third: regulatory information (net weight, country of origin, barcode, certifications, manufacturer contact). Follow this structure consistently — it matches how consumers read packaging.

Readability Rules

• Minimum font size: 8pt for secondary information; 6pt for ingredient lists on small packs (check market regulation)
• Contrast ratio: at least 4.5:1 between text and background for legibility
• Avoid: reversed-out text (white on dark) in small sizes on textured stock — ink spread destroys legibility
• Test: print a proof at 100% size and read it in a supermarket aisle at arm's length