Before you sign the proof: what to check on cosmetics packaging ahead of print

A signature on the proof moves the risk to the brand

A proof is the last cheap moment to find an expensive mistake. Until it is signed, an error in the artwork is a correction. Afterwards it is a reprint, a relabelling job or stock that cannot be sold, and the printer will point to the approved proof when the question of who pays comes up.

Beauty packaging makes approval harder than most print. The surfaces are small, the text is dense, several languages share one panel, and the finishes that make a carton look expensive are the ones a standard proof cannot show.

The way to stay in control is to stop reading the proof as one picture. Treat what follows as a packaging proof checklist in four passes, each with its own question: will it fold and glue, will colour and finishes match, will the codes scan, and is every required statement present and correct for the market.

Know which kind of proof is on the table

The word covers at least four objects. A soft proof is a PDF on screen: good for text, layout and overprint, unreliable for colour unless the monitor is set up for it. A contract proof is a colour-managed print that simulates the press. A press proof comes off the production machine and material. A white sample shows structure with no print.

Fogra, the German research institute for media technologies, is blunt about the difference. It warns against relying on a coloured printout or an old print called a “proof”, and ties a colour-accurate digital proof to a control wedge and the tolerances of ISO 12647-7. It names ISO 12647-8 for design-stage validation prints and ISO 3664 for viewing conditions.

So ask the printer which proof you are signing and what it can show. A contract proof on proofing paper will not show foil, embossing, a soft-touch coating or the tint of the real board. If those matter, ask for a sample on the production material, or agree in writing what is approved from a reference instead.

Dieline, bleed and the places where ink must not go

Start with construction, because a beautiful panel that lands on a glue flap is waste. Confirm that the dieline in the file is the printer’s current one for this exact carton, tube or label, with its reference number, on its own non-printing layer. A dieline redrawn from an old job is how cartons end up not closing.

Then check what crosses each line. Backgrounds must extend past the cut by the bleed the printer specifies; text, logos and codes must stay inside the printer’s safety margin. Use the printer’s figures, not habit, because they depend on the machine and the material. Glue flaps and the batch-code area normally stay free of ink and varnish.

Finally, fold it. Print the artwork at full size, cut it out and assemble it. Only then is it obvious that the ingredients list runs upside down on the base, that the opening flap hides the product name or that small type sits on a crease. For a tube or bottle, wrap the printout round the real container.

Colour is approved against a reference, under agreed light

Colour disputes come from approving the wrong thing. Decide how each brand colour is printed, as a separate spot ink or built from process colours, and what the reference is: an ink drawdown on the production board, an approved earlier run or a contract proof made to a named printing condition. A hex value on a screen is not a reference.

The material changes everything. The same ink looks different on coated white board, uncoated kraft, metallised film and a white tube, and a coating laid over it shifts it again. If a range spans several materials, expect to approve a target for each and to judge the pieces side by side.

Agree the tolerance before the press starts. Printers express it as a measured colour difference from the target; ask which figure and which instrument they work to, and write both on the approval. Compare samples under standard viewing light, not office lamps. Sign two copies of the approved sheet and keep one as the standard for the next run.

Foil, varnish and embossing need their own check

Finishes travel through the file as separate layers, each named for what it is: foil, spot varnish, emboss, white underprint. Open the separations view of the PDF and switch them on one at a time. A foil plate built from an earlier version of the logo goes unnoticed in the composite view.

Each finish has physical limits that only the finisher can state: the thinnest line a foil will hold, the smallest text an emboss keeps legible, how far a spot varnish may drift against the print beneath. Ask for those limits in writing and check the artwork against them.

Finishes also interfere with function. A glossy film over the barcode changes how it reflects, a soft-touch coating can reject the ink of a batch coder, and a heavy emboss behind small legal text makes it harder to read. Mark on the proof where varnish must be left out for coding and gluing.

The barcode has to scan at the till, not just look right

A barcode is engineering inside the artwork. The GS1 General Specifications, the standard behind retail barcodes, size an EAN-13 for the point of sale by its narrowest bar, the X-dimension: 0.330 mm as the target, 0.264 mm as the minimum and 0.660 mm as the maximum in Release 26.0, ratified in January 2026. At the target size the symbol, light margins included, is 37.29 mm wide with bars 22.85 mm high.

Around the bars the standard requires clear light margins, the Quiet Zones: at least 11 times the X-dimension to the left of an EAN-13 and 7 times to the right. Truncating the bars is to be avoided unless absolutely necessary; a barcode and its Quiet Zones must never sit on folds, flaps, seams, edges or tight curves; and, when possible, the symbol stays at least 8 mm from the nearest edge of the pack.

GS1 notes that black on white paper will almost certainly reach the top grade for contrast, and that coloured inks, coloured backgrounds and highly glossy materials affect the result. A phone that reads the code is a scanner; the standard’s test is verification to ISO/IEC 15416. And no verifier checks that the digits under the bars match the data, so someone reads the number against the product list.

Mandatory label information depends on where the product is sold

In the European Union the list is in Article 19 of Regulation (EC) No 1223/2009. Container and packaging must bear, in indelible, easily legible and visible lettering: the name and address of the responsible person, with the country of origin for imported products; the nominal content; the date of minimum durability or, for products lasting more than 30 months, the period after opening; precautions for use; the batch number; the product’s function unless clear from its presentation; and a list of ingredients, which may appear on the packaging alone.

In the United States the FDA’s Cosmetics Labeling Guide places the product name, its identity and the net quantity of contents on the principal display panel, and directions for safe use, warnings, the name and place of business and the ingredient declaration on the information panels. It gives minimum letter heights, such as 1/16 inch for the ingredient declaration, or 1/32 inch where the labelling surface is under 12 square inches.

Language is a legal matter before it is a layout one. Under Article 19, the language of the content, the durability date, the precautions and the function is determined by the law of the Member State where the product is made available to the end user. The FDA guide requires the mandatory statements in English, except for products distributed solely in Puerto Rico or a territory where another language predominates, and adds that a label carrying any foreign-language representation must repeat them in that language. Count the languages each panel must hold before setting the type size, and have a native reader check every version.

Neither list is a design decision. The legal content of the proof is checked against the current law of each market by the brand’s regulatory specialist or responsible person; this article is not legal advice. The FDA page states that its content was current as of 25 February 2022, a reminder to look for newer requirements. The designer’s part is to keep every required statement legible and unobscured.

Who signs, and what each signature covers

One signature cannot vouch for everything on a pack. Split the approval by competence: the packaging engineer or printer for the dieline and technical settings, the designer for artwork against the approved design, marketing for names and claims, the regulatory specialist for mandatory text and languages, supply chain for the barcode number, and one named person for the final release.

All of them sign the same thing. The approval sheet names the file, its version number and date, the proof type and the reference samples, and each signature is dated. Corrections are marked on the proof itself and collected into one list.

“Approved with changes” is a risky phrase, because nobody sees the changed file before it runs. Any change, however small, produces a new version and a new proof of at least the affected panel. Keep the signed proof, the approved sheet and the final files together as the starting point for the next run.