Private Label Bath Salt
Minerals, botanicals, and twenty minutes of quiet.
What keeps a dry blend from drifting
Particle size distribution
Flow, dissolution rate and hand-feel all come from the size distribution. It is set by the process and verified at release.
Coating changes the release
A coating can delay dissolution or protect a sensitive component. It is a process decision with a visible effect on how the product behaves in water.
Bulk density versus fill weight
Settled and loose bulk densities differ, so a pack filled by volume can vary by weight. Fill is verified the way the customer experiences it.
Segregation of a blend
Different particle densities separate during shipping, so the blend is designed to still deliver a consistent dose at the bottom of the pack.
Bath salt is the simplest formula in your line and the best-margin: minerals, botanicals, scent — no emulsification, no stability testing, no preservatives. The art is the blend and the presentation, and both are where we help brands win.
We blend Epsom, Dead Sea and Himalayan salts with flower petals and essential-oil scents, fill jars and stand-up pouches, and support the gift-program economics that make bath salts a quarterly best-seller.
How the blend is fixed before scale-up
- 1
Blend in density order
Components are added in an order that discourages segregation, so the blend stays uniform across the whole run.
- 2
Choose the barrier pack
Pouch, jar or tube, selected for the humidity of the destination market rather than for appearance.
- 3
Verify fill weight per unit
Fill is checked per unit rather than per batch, since bulk density can drift through a run.
- 4
Design the blend against segregation
Particle densities are matched so the pack still delivers a consistent dose at the end of its life.
The components that do the work here
INCI names and typical levels reflect publicly documented formulation practice. All values are adjustable in your build.
| Ingredient (INCI) | Typical Level | Function & Benefit |
|---|---|---|
| Magnesium Sulfate (Epsom) | base | Classic soak mineral |
| Maris Sal (Dead Sea) | blend | Trace-mineral profile |
| Essential Oil blend | 0.5–1% | Ritual scent |
Blending is where a dry formula is won or lost
Two powders mixed together behave differently from either one alone. Density, particle shape and moisture all affect whether the blend stays uniform from the first scoop to the last.
That is why the blend is designed against segregation rather than checked for it afterwards, and why fill verification is done per unit rather than once per batch.
Which powder route fits which pack
Where a format reacts on contact with water, the pack and the moisture specification are part of the formula rather than an afterthought.
| Format | Process demand | Where it fits |
|---|---|---|
| Effervescent | Reacts on contact with water | Bath and shower formats with a visible action |
| Clay powder | Dispersible grade, resistant to clumping | Powder masks mixed by the customer |
| Foaming powder | Surfactant-loaded and moisture-critical | Cleansing powders decanted by the customer |
| Dry shampoo powder | Fine, low-residue, static control | Waterless hair-refresh formats |
Other dry formats we manufacture
Buyer guides for this build
Before you brief a supplier on this category, these are the guides that answer the questions buyers ask next — timelines, order quantities, cost structure and compliance.
Where the compliance file comes from
The line is GMPC and ISO 22716 certified, and each batch carries raw-material-to-carton traceability under licence 粤妆20250206.
For a dry format the file is built on moisture control through milling, blending and filling, with the certificate of analysis, stability summary, microbiology report and MoCRA / CPNP-ready documentation attached to the order. Batches are released against the retained Golden Sample.
Order quantities by pack size
Mixed-variant orders can split the stated MOQ across formats under one brand.
| Format / Specification | MOQ | Lead Time |
|---|---|---|
| Bath salt jar 500 g | 1,000 pcs | 10–15 days |
| Refill pouch 1 kg | 1,000 pcs | 10–15 days |
| Gift trio (3 scents boxed) | 1,000 sets | 10–15 days |
MOQ and lead time above are the standard liquid, cream and gel route. The real minimum is set by the manufacturing system rather than the category: surfactant systems (shampoo, body wash) start at 2,000 pcs, stick formats at 3,000, and powders and sheet masks at 5,000 — with longer production runs to match.
What can be adjusted on this blend
- Petal / botanical inclusions
- Jar, pouch, or tube formats
- Scent library (10+ directions)
- Gift-box economics
Flow, caking and shipping questions
Epsom or Dead Sea base?
Epsom for the muscle-soak story, Dead Sea for mineral prestige, Himalayan for color. Most lines carry two and let the customer choose.
Stability testing needed?
Minimal — dry salts are stable; the only QC is moisture control during filling and scent hold over time.
Why such a fast lead time?
Blending and filling only — no emulsification or curing. 20–25 days is standard, 15 possible for re-orders.
Send the destination market
Humidity decides the pack and the anti-caking strategy. Tell us where it ships and we build backwards from that climate.