Wrapping Soap in Greaseproof Paper: Bands, Wraps and Boxes

Why does soap need a grease barrier?

Cold-process soap is made from oils and butters. Even after the cure, a small amount of free oil stays in the bar and moves to the surface in warm weather.

On ordinary paper that oil shows as a dark, translucent stain around the bar within a few weeks. On a printed label it lifts the ink and makes the sheet look greasy. Olive, castor and avocado oils are the worst for it, and they are in most artisan recipes.

Greaseproof paper holds that oil at the inside face of the sheet. The outside stays matte and the print stays sharp, which is the whole point of the soap wrapping paper range.

Cure first, wrap second

Most makers cure cold-process bars for four to six weeks before wrapping. Water leaves the bar during that time, and a bar wrapped early sweats inside the paper.

Wrap too early and the paper goes soft at the base. Wrap too tight and the bar cannot finish curing. Leave a fully cured bar in open air for a day after cutting any fresh faces, then wrap.

Hot-process and melt-and-pour bars cure faster, but they can still sweat glycerin in humid rooms. A greaseproof wrap handles that the same way it handles oil.

Store cured bars with air between them, not in a sealed tub. A bar that has been stacked in plastic for a month comes out sweating and needs another day out before it is wrapped.

Full wrap, band or box liner?

There are three ways to dress a bar in paper, and most makers use two of them.

Most makers settle on a band for the stall and a full wrap for anything that goes in a mailer. The pale kraft band in our soap photos is the stall version, with the bar and its herb top left visible.

How to fold a full wrap

A standard 3.5 × 2.5 × 1 in bar wraps in an 8 × 8 in sheet. A tall 3.75 × 3 in artisan bar wants 10 × 10 in.

1. Lay the sheet print side down and set the bar in the center, long edge parallel to one side.
2. Bring the near edge over the top of the bar and crease it along the far top edge.
3. Bring the far edge over so it overlaps by at least an inch, then crease. The seam sits on the back of the bar.
4. At one end, push the two side flaps inward so they form triangles against the bar.
5. Fold the top triangle down, then the bottom triangle up, and crease hard. Repeat at the other end.
6. Hold the end folds with a dot of glue, a sticker or a band. Greaseproof does not take tape well.

Practice on three bars before you set the sheet size. If the end flaps overlap by more than an inch, step down a size. The fully wrapped kraft bar in our photos uses this fold, with the logo centered on the top face.

Sizing a soap band

A band is a strip that wraps the middle of the bar and overlaps at the back. Measure the full girth of the bar and add about 0.75 in for the overlap.

A 3.5 × 2.5 × 1 in bar has a girth of about 7 in around the short way. A 2 × 9 in band fits it with room to glue. A chunky 3 × 3 × 1.25 in bar needs 2.5 × 10 in.

The band width is the label. Keep it between 1.5 and 3 in so the bar and its top are still visible. A wider band hides the swirl or the botanical top that sold the bar in the first place. Printed soap bands come in four strip sizes to cover the usual bar shapes.

Which weight and stock for soap?

Soap wrap sits at the lighter end, about 25 to 32 lb. It has to fold crisply around corners, and a heavy sheet cracks at the end folds.

Kraft greaseproof is the most popular stock for handmade soap. It looks natural, hides minor fingermarks and takes a dark one-color print well. White stock suits brighter branding and shows pastel inks properly. Textured and mottled stocks look good on soap but fold less cleanly, so keep them for bands rather than full wraps.

Bands can go heavier, up to about 40 lb, because they bend only once around the bar. Our custom soap wrapping paper is quoted at wrap weight, and bands separately.

What to print on a soap wrap

Customers expect the name of the scent, the ingredient list, the net weight in ounces and grams, and your business name. On a band those fit in three lines.

Put the scent name on the front face at the largest size. Ingredients go on the back or on the band in 7 to 9 pt, no smaller.

Leave a blank area for a batch sticker if you make small batches. Printing a batch number on 1,000 wraps locks you to one batch.

One color on kraft is the safe choice. A dark green or charcoal mark on tan paper reads as handmade without trying, and it costs nothing in registration worries.

Glassine bags for small bars and samples

Sample bars and guest sizes are too small to wrap by hand efficiently. A glassine bag at 3.5 × 5.5 in takes a 1 oz sample, and 4.75 × 6.75 in takes a half bar.

Glassine is a dense, glossy paper that resists oil the way greaseproof does and shows the bar through the bag. A printed glassine paper bag with a folded top and a sticker makes a sample look like a product.

Bags also solve the loose-botanical problem. A bar with dried petals or oats on top sheds in a wrap; in a bag the bits stay with the bar. For a set of three samples, a 5.5 × 7.5 in bag holds all three with the tops showing through.

Mistakes that mark the wrap

Almost every stained wrap we are shown comes from one of these.

• Wrapping before the cure is done, so the base goes soft.
• Using plain kraft paper for a bar that is high in olive or castor oil.
• Printing the ingredient list in 5 pt type nobody can read.
• Folding a heavy sheet so the end flaps crack and show white.
• Taping the seam; tape lifts on greaseproof within days.
• Stacking wrapped bars in a sealed box while the room is humid.

If a wrap does stain, check the bar first. A bar that weeps oil at six weeks usually has a recipe or cure problem that paper cannot fix.

Ordering wrap, bands or bags

Tell us your bar dimensions, the number of scents and whether each scent needs its own print. One sheet design with a blank panel for a scent sticker can cover a whole line.

We send a written quote within one business day and a free proof of each design. Production is 4 to 6 business days after you approve it, and delivery is free and tracked to US addresses.

Minimum order is 1,000 wraps or bands per design. Send bar sizes and your logo through the quote request form.