Oil phase and droplet

size of an emulsion…

Oil phase and droplet

size of an emulsion…

Facts on how to influence emulsion structure:

1. The smaller the droplets are, the more space they require.
Thus, the droplet size strongly can influence the consistency and stability of an emulsion.

In the picture:
Oil phase in 13 droplets vs. oil phase in 26 droplets vs. oil phase in 52 droplets

Cosmetic Services - three oil phases where with every step, the oil droplets get smaller and get more

2. The bigger the oil phase and the smaller the droplet size, the more creamy the texture and as whiter the colour.

3. The bigger the internal phase is, the tighter the oil droplets are organised in an o/w emulsion. This can lead to an increase of the viscosity if a steric interaction starts.

How to create enough space for the internal phase?

Option 1: Exact control of droplet size during production

Option 2: Reduction of oil phase size (internal phase)

Option 3: Reduction of hydrocolloids (external phase)

Option 4: Change HLB value or emulsifier ratio to avoid a lamellar structure formation

Cosmetic Services - orange oil solution with droplets that have different sizes


RAHN-Good-to-Know_Oil phase and droplet size

PDF, 5 Pages, 1.3 MB

Your personal contact

Sandra Gut

Sandra Gut

Portfolio & Application Laboratory Manager Cosmetics

RAHN (UK) Ltd.