Custom Bath Salt Boxes
Bath salts are hygroscopic — they pull water from the air, and then out of whatever they are sitting against. A carton that is fine for a candle will go soft and warp around salt within a season.
- Builds
- Straight tuck, reverse tuck, seal-end, rigid, window
- Board
- 16–24pt, stepped up for weight rather than size
- Inner
- Poly-coated face, or sized for a jar or barrier pouch
Get a price for Bath Salt Boxes
Send the size and quantity — we reply the same working day with a price, a dieline and a date. Artwork optional at this stage.
- Free dielineThe flat drawing comes with the quote, before you commit.
- Proof before pressNothing is printed until you have seen it laid on the dieline.
- Die kept for reordersTooling is paid once. Every reorder skips straight to press.
- Quoted in four marketsUS, UK, Canada and Australia, in the delivery currency.
Never let salt touch bare board
Loose salt against uncoated carton wicks moisture into the fiber, softens it, and eventually leaves a visible tide line. The answer is either an inner pouch or jar, or a coated inner face on the carton itself.
Most brands we quote use a jar or a barrier pouch inside a printed carton, which also solves the dosing question and keeps the fragrance in. The carton then only has to look good and carry the label.
If salts go directly into the box, specify a poly-coated inner face. It roughly doubles the useful shelf life.
Weight is the constraint people miss
Salt is dense. A 500 g pack is a small object with real mass, and a carton sized for its volume will feel flimsy under its weight. Step the board up rather than sizing up — 20pt where you would use 16pt for a lighter product.
For anything over about 750 g, a base insert or a double-thickness bottom stops the carton bowing on a shelf.
| 250 g | 16–18pt board, standard tuck |
|---|---|
| 500 g | 20pt board, locking tuck bottom |
| 1 kg+ | 24pt or a rigid build, reinforced base |
Where the label information goes
Bath salts sit under cosmetic labeling rules in every market we ship to, which means an ingredient list in INCI order, net weight and a responsible-person address for UK and EU sales. On a narrow carton that panel competes directly with the design.
We mark the mandatory area on the dieline before artwork starts — the same approach set out in our cosmetic carton notes, and the same reason most reprints in this category happen.
Windows, and why they usually cost you
- A window shows the color of the salt, which is genuinely a selling point.
- It also lets light in, and natural colourants fade faster than brands expect.
- On a moisture-sensitive product it is one more edge for humidity to reach.
- A printed photograph of the salt achieves most of the effect with none of the risk.
Bath Salt Boxes — specification
The rows that are specific to this build first, then what applies to every job we run. Anything not listed is a question, not a limit — send the brief.
This build
- Builds
- Straight tuck, reverse tuck, seal-end, rigid, window
- Board
- 16–24pt, stepped up for weight rather than size
- Inner
- Poly-coated face, or sized for a jar or barrier pouch
- Base
- Locking tuck or reinforced bottom above 750 g
- Labeling
- INCI panel marked on the dieline
- Minimum
- 100 cartons
On every job
- Print process
- Digital below about a thousand, offset above it. One side or both, with spot colors where a match has to hold.
- Color
- CMYK as standard. Uncoated and kraft stocks print lighter and warmer; a spot color is the only exact match.
- Tolerance
- Cutting plus or minus 1 mm, creasing plus or minus 0.5 mm, confirmed on a plain sample before the run.
- Tooling
- A cutting die per size, made once and kept. Foil and emboss dies per artwork, also kept.
- Food contact
- Food-grade board and inks where the carton touches food, with the interior left plain.
- Sustainability
- Mono-material board wherever the product allows; recycled-content and FSC stocks; no claim printed the pack does not earn.
- Artwork
- Vector PDF or AI, 3 mm bleed, 4 mm safe area, fonts outlined. We check every file and send a proof before press.
- Dieline
- Supplied free with the quote, before you commit. Yours whether or not you order.
- Sample
- A plain unprinted sample at the finished size on request, for fit and construction.
- Reorders
- Skip the tooling and go straight to press at a lower unit price.
- Lead time
- Quoted with the price against your fill date rather than promised before we have seen the spec.
- Markets
- United States, United Kingdom, Canada, Australia — priced in the delivery currency, freight included.
Boards and films we build bath salt boxes on
A folding carton is one sheet of board, so the board is the product. These are the stocks we run for cartons, what each is good at, and where it lets you down.
Natural kraft
Unbleached folding board. Warm, hides marks, costs least. Mutes color — one or two flat colors print well, photographs do not.
250–350gsm sleeves; 14–24pt cartonsWhite SBS
Solid bleached sulfate: bright, coated, the retail carton standard. Takes accurate color and every finish. Shows scuffs sooner than kraft.
14–24ptWhite lined chipboard
A recycled gray core under a white printing face. Cheaper than SBS and slightly duller; the back of the sheet stays gray.
16–24ptKraft-look coated
A kraft face over a coated inner. The natural look with a barrier behind it — the answer where oil, grease or moisture would mark plain kraft.
14–20ptRecycled-content board
Post-consumer fiber with a gray-brown cast. Right for outers and inner components; poor for bright whites and photography.
16–22ptMicro-flute E and F
A fine corrugated layer where a carton needs structure it cannot get from board — a large panel, a heavy product, a box that ships alone.
E 1.5 mm; F 0.8 mmUncoated and textured
No clay coat, or a linen or laid grain. Print reads softer and warmer; a deboss goes deeper. Photographs do not sit well on it.
280–350gsmMetallised and pearlescent
A metallic or pearl face for a shelf that needs to catch light. Costly, and it fights a photograph — a mark or a pattern suits it better.
16–20ptNot sure which? Say what goes in it and where it is sold — the material follows from that. Our notes on recycled, recyclable and compostable cover which claims each stock can honestly carry.
- 01
Send what you have
A dimension, a photograph beside a ruler, or the product itself. No technical drawing needed — that part is ours.
- 02
We quote and draw
A price, a dieline and a date come back together. If a different build would suit the product better, that is in the reply too.
- 03
Approve the dieline
The flat drawing is yours to check: which panel is the front, where the folds fall, how deep the cavity really is.
- 04
Artwork on the dieline
You place your design on the flat we sent, or we place it for you, and you see a proof before anything goes to press.
- 05
A sample if you want one
A plain unprinted sample at the finished size shows fit and construction — the things a drawing cannot.
- 06
Cut, printed, shipped
The die is cut once and kept, so every reorder skips the tooling and goes straight to press at a lower unit price.
Format
Vector PDF or AI where possible. Raster artwork at 300dpi at final size, in CMYK.
Bleed
3 mm past every trim line, so a fraction of drift on the cutter never leaves a white edge.
Safe area
Keep type and anything important 4 mm inside the cut and away from every fold.
Color
Convert to CMYK before sending. Uncoated stock prints lighter; a spot color is the only exact match.
Fonts
Outline them or supply the files. A missing font substitutes silently and the proof will not match.
Barcodes
On a light, matte, unvarnished patch with the quiet zone clear — a code on gloss fails the scanner.
Not set up that way? Send it anyway — fixing a file is a short conversation, and we check every one before press. Our guide to preparing print files covers each point.
Every finish here is a decision about light on a shelf, not about luxury.
Matte lamination
Reads considered, hides marks, takes a ballpoint.
Gloss lamination
Lifts color; glares under shop lighting.
Soft-touch
Velvet in the hand; shows fingerprints in a bag.
Hot foil
Real metal leaf — the most reliable premium signal.
Emboss / deboss
Shape with no ink; works in the dark.
Spot UV
Gloss shapes on a matte field.
Uncoated kraft
Warm, natural, mutes color.
Textured stock
Texture in the paper; cannot scuff off.
Not sure which suits the shelf it sells from? Say where the product is sold and we suggest one — our notes on specialty finishes show them on real boxes.
Sizing a folding carton so the die comes out right: bath salt boxes
Measure the product, not the box it is in now. A carton is built around what has to fit inside it, assembled — cap on, lid fitted, folded if it folds — at its widest point in each direction. Send those three numbers and say which is which.
- Length x width x height
- Internal, always. External dimensions include the board and are what the carrier measures, not what the product needs.
- Clearance
- 2–3 mm a side for a snug fit; more where an insert or void fill goes in. A carton cut exactly to the product is slow to pack and transmits every knock.
- Board thickness
- Heavier board takes internal space from the product. It matters most on small boxes, where four walls of 24pt is a real share of the cavity.
- Varies between batches?
- Glass, textiles, molded parts and cured soap all do. Measure several and build to the largest.
- Cutting tolerance
- Plus or minus 1 mm on folding board. Confirmed on a plain sample before the run.
- Units
- Metric or imperial, as long as you say which. Mixing them in one spec is where mistakes happen.
Not sure your numbers are right? Send the product dimensions rather than the box dimensions and we work the box out — the full method is in our guide to measuring for a box.
Interactive · five steps · no sign-up
Build your Bath Salt Boxes in 3D
Pick a shape, type a size, choose a board and a finish. The preview on the left redraws as you go, and the spec lands with us exactly as you set it.
Frequently asked questions
Got a question about bath salt boxes? The answers below cover what we get asked most. If yours is not here, send it with a brief, message us on WhatsApp, or call +1 503-461-4788 — we reply the same working day.
What is the minimum order?
100 cartons, cut to your jar or pouch.
Can salts go straight into the carton?
With a poly-coated inner face, yes, for a reasonable shelf life. Against bare board they will soften it.
Why does my carton feel flimsy?
Almost always board weight rather than size. Salt is dense — step the board up rather than enlarging the box.
Do I need INCI labeling on bath salts?
In the markets we ship to they are treated as cosmetics, so yes. We reserve the panel on the dieline.
Is a window worth it?
Only if the salt is visually distinctive. It fades colourants and adds a humidity path.
What board suits a 1 kg pack?
24pt or a rigid build with a reinforced base. At that weight the base is what fails first.
Can salts go straight into the carton?
With a poly-coated inner face, yes, for a reasonable shelf life. Against bare board they will soften it — an inner pouch or jar is the safer build.
Why does my carton feel flimsy?
Almost always board weight rather than size. Salt is dense; step the board up rather than enlarging the box.
Do I need INCI labeling on bath salts?
In the markets we ship to, yes — they are treated as cosmetics. We reserve the panel on the dieline so the artwork does not have to be redone.
Is a window worth it?
Only if the salt is visually distinctive. It fades colourants and adds a humidity path, and a printed image gets most of the benefit.
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