Process guidance, capacity range and machine recommendations for hair care products.
Shampoos, conditioners, hair masks, hair dyes, styling gels — these are surfactant-based liquid products requiring gentle mixing for foaming control and powder wet-out for thickeners.
Typical capacity: 100L — 2000L
Typical viscosity: 500 – 30,000 cps

Dissolve surfactants in water under slow agitation → add thickeners (carbomer, xanthan) under high-shear → neutralize → add actives and fragrance → deaerate.
A shampoo is a thin surfactant solution, often a few hundred to a few thousand centipoise. A conditioner is closer to a cream. A hair mask can be heavier than either. Putting all three on one machine means the machine has to be comfortable across the whole band, which is why this application spans RS, RX and RB rather than one layout.
The low end is easy — anything circulates. The high end is what decides the purchase: a thick mask with powder loading needs an external circulation loop, which is RX's territory, or a separate emulsifying pump, which is RB's.
Surfactant-based products want to foam, and high-shear mixing gives them every opportunity. Once a batch has foamed, you cannot fill it accurately, and breaking the foam down afterwards usually means waiting or adding an antifoam you did not want in the formula.
Mixing under vacuum at −0.09 MPa removes the foam as it forms instead of after the fact. It also means you can pull powders in through the vacuum line rather than dumping them into an open vessel, which is both faster and cleaner.
Salts, polymers and conditioning agents are the slow part of most hair-care batches. Drawn in too fast they form agglomerates that no amount of subsequent shearing will fully break down; drawn in under vacuum into a well-sheared vortex they incorporate cleanly. This is where a scraped-wall agitator working against a high-shear head pays off.
Between batches, the machine has to be clean enough that yesterday's cationic conditioner does not end up in today's anionic shampoo. A tilting vessel, which RS provides, and contact surfaces polished to Ra ≤ 0.4 µm, which all three layouts provide, make that significantly quicker than a fixed vessel with a rougher finish.
Best for: High-viscosity cream, ointment and toothpaste — especially where ceiling height is limited.
RB vacuum emulsifier mixer: an independent emulsifying pump piped to the vessel bottom, external circulation. Ideal when headroom is tight, and easier to servic…
View spec sheet →Best for: Face cream, body lotion and ointment — medium viscosity, light powder loading.
RS vacuum emulsifying mixer: top-entry homogenizer, in-vessel circulation, tilting vessel for easy discharge and cleaning. Built in SS316L contact parts, Ra ≤ 0…
View spec sheet →Best for: Toothpaste, high-viscosity cream and ointment — heavier powder loading, finer particle size.
RX vacuum homogenizer mixer: bottom-entry homogenizer, external circulation loop, self-pumping. Built in SS316L contact parts, Ra ≤ 0.4 μm.…
View spec sheet →It depends where in the viscosity range you spend most of your time. Shampoo alone runs happily on an RS. If hair masks or heavy conditioners are a meaningful share of your output, RX's external circulation loop or RB's separate emulsifying pump will handle the thick end far better.
Mix under vacuum. Foam is air dispersed in liquid, and removing the air as it is generated is far more effective than trying to collapse the foam afterwards. Vacuum also lets you draw powders directly into the batch rather than charging them through an open manhole.
Yes, and the method matters more than the machine: add them slowly into a well-formed vortex, preferably under vacuum through the suction line, with the high-shear head running. Dumping a whole bag onto the surface is what creates fish-eyes.
It is what we build contact parts from as standard, polished to Ra ≤ 0.4 µm. Beyond corrosion resistance, the polish is what makes cleaning between formulations quick — and on a plant running several different surfactant systems, cleaning time is real production time.
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