All essays

Shampoo bar manufacturing

Process notes, formulation choices, quality checks, and packaging thinking for solid hair-care products.

Your Stick Blender Is Sabotaging Your Bars

You’ve balanced the surfactants. The fatty alcohols are right. The pH looks perfect in the beaker. But the bars still crack, pinhole, soften, or swing...

Coconut Oil Is Not One Ingredient

I’ve watched shampoo bar batches turn from a solid, glossy bar into a tacky, sweating mess inside sealed packaging, and more often than not the root cause...

The CPOP Shampoo Bar Trap

Let's get one thing straight: CPOP is not a curing shortcut, and it is not a pH fix. I've had formulators tell me they "cure" shampoo bars in a day by...

The Lavender Paradox in Shampoo Bars

Walk into any indie soap market or scroll through a DTC haircare brand's Instagram, and you'll hear the same pitch about lavender shampoo bars: calming,...