Application
Powder Blending in Cosmetics Production
Answer in brief
In colour cosmetics the blend is judged by eye, which is a stricter test than most analytical limits.
Pigment agglomerates that survive the mixer appear as specks in the pressed product, and carryover between shades is visible immediately.
- Deagglomerate rather than mix longer.
- Design for complete emptying between shades.
- Contain the pigment; it travels and it stains.
Reviewed October 21, 2026 · Updated October 21, 2026
The problem
Pigments arrive agglomerated and have to be dispersed through a base powder, and the smallest carryover between shades is visible in the finished product.
Desired outcome
A blend that disperses the pigment completely, matches the reference shade and leaves nothing behind for the next colour.
Process approach
High shear or deagglomerating mixers break pigment agglomerates, which longer tumbling does not achieve.
Screening after blending catches what remains, and it is a routine step rather than a correction.
Complete discharge and visual cleanliness between shades usually dictate the mixer geometry more than capacity does.
- Deagglomeration step matched to the pigment.
- Screening after blending as standard.
- Geometry that empties completely and can be inspected.
Selection factors
- Shade tolerance and how it is assessed.
- Pigment agglomerate strength.
- Changeover frequency between colours.
- Exposure limits for the powders.
- Batch size and the smallest quantity blended.
Common failure modes
- Pigment agglomerates visible in the pressed product
- Shade carryover from the previous batch
- Longer mixing used instead of deagglomeration
- Dust escaping and staining adjacent production
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