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Bath bombs are delicate and often packed with oils and colorants, and they can soften or fizz early if exposed to humidity. Wrapping each bath bomb first adds a protective barrier (see bath bomb wrappers), and foil wrap is the strongest choice for bombs with oils or sensitive ingredients. For the printed box, a coating such as varnish or lamination protects against scratches, scuffs and moisture. Our guide to varnish vs lamination explains the difference.

Choose white for the sharpest, most vibrant printing: it uses Solid Bleached Sulfate (SBS) paper, which gives high-quality print results. Choose brown kraft for a natural, eco-friendly look. Kraft is unbleached brown paper and works best with black or white printing only.

Matte has a smooth, non-reflective surface and a softer look. Glossy is reflective and vibrant, but it highlights fingerprints more. Satin is semi-glossy, a balance between matte and glossy. Soft touch looks like matte but feels like velvet. For a high-end look you can also add foil stamping, which gives a metallic finish, or embossing, which adds texture to logos and designs.

Measure your bath bomb across its widest point, then add about ¼ in (6 mm) so it slides in easily, and a little more if it is shrink-wrapped or has dried flowers or a bumpy top. Always write the size as length × width × height. Our guide to measuring a box shows how, and the size guide on each box page has suggested sizes.