Cost per Ounce vs. Cost per Wash: The Shampoo Bar Math Most People Miss
“Cost per ounce” is the quickest way to compare shampoo bars-and one of the least reliable. I can manufacture two bars that weigh the same, sell for the same...
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Shampoo bar manufacturing
Process notes, formulation choices, quality checks, and packaging thinking for solid hair-care products.
How to store shampoo bars to extend shelf life?
Proper storage is the single most important factor in extending the life of your shampoo bar. Unlike liquid shampoos, solid bars are naturally more...
Shampoo Bar Bulk Purchasing: What Experts Know That Buyers Don't
You've found a supplier. The per-unit price looks strong at 500 units. The margins are healthy. The sustainability story practically writes itself. And...
Shampoo Bar Cost Per Ounce: Why Your Math Is Wrong
There's a number that every shampoo bar manufacturer quotes with complete confidence and almost nobody calculates correctly. That number is cost per ounce -...
The Shampoo Bar Gift Set as a Mini Lab: Building a Routine, Not a Bundle
Most shampoo bar gift sets are put together like fragrance gifts: pick a theme, match the scents, add nice packaging, and call it done. That approach can look...
The Shampoo Bar That Actually Works
Most shampoo bars fall into one of two camps: harsh soap that leaves your hair feeling waxy, or synthetic detergent bars packed with chemicals you can't...
The Tea Tree Trap
Walk into any natural market or scroll through Etsy, and you’ll find a dozen “tea tree dandruff shampoo bars.” The pitch is irresistible: tea tree oil kills...
What packaging is eco-friendly for shampoo bars?
When it comes to shampoo bars, the most eco-friendly packaging is no packaging at all - bars sold completely naked. But when protection is needed during...
Essential Oil Blends for Shampoo Bars: Formulating for What Actually Happens in the Shower (and on the Shelf)
In a shampoo bar workshop, essential oils are usually treated like the “fun part”-the finishing touch that makes a formula feel personal and botanical. In real...
Essential Oils in Shampoo Bars: Designing for What Evaporates, Oxidizes, and Irritates
Essential oils in shampoo bars are often treated like the fun part: pick a scent, add a few drops, press the bar, and enjoy. In a production setting, I look at...