What we actually stock for this

Polish: 28 glass containers

From 14.787 to 29.573 mL with 60 closures. 25 Boston rounds, plus one each of packer, cylinder round and square. Necks 20-400 at 20, 18-400 at 4, 28-400 at 2, and one each of 24-410 and 24-400.

And its closures, which are the problem

48 continuous thread and 12 phenolic. No brush cap, on a shelf for a product whose defining component is a brush. The brush section explains why and names the four that exist.

Treatments: 60 glass containers

For cuticle oil, nail glue and nail treatment, with 186 closures of which 40 are dropper assemblies. That is a well served format and the dropper is the right fitment for a product applied a drop at a time.

Remover: 191 containers

From 100 to 4,731 mL, 149 HDPE and 42 glass, with 236 closures. The largest of the three shelves by a wide margin, because a remover is bought by volume rather than by the bottle.

Color, on the polish shelf

7 blue, 6 clear, 5 amber, and 2 each of frosted, purple, red and white, with one each of black and green. Clear shows the lacquer color, which is most of how polish is merchandised.

The four brush caps

All polypropylene, on 18-400, 18-410, 20-400 and 28-400. Two of those finishes cover 24 of the 28 polish bottles, so the pairing is straightforward once you know to shop for them separately.

Where to settle the match

Every container page lists the closures verified against its own neck, and for 26 of these 28 bottles a brush cap is already in that verified set even though the shelf filter does not surface it.

References