Nah! Evaporation will thicken them as will lack of movement. A good old shake will sort them out (if the haven't evaporated already). Look up 'thixotropic'
Thixotropy is the property of certain gels or fluids that are thick (viscous) under normal conditions, but flow (become thin, less viscous) over time when shaken, agitated, or otherwise stressed. In more technical language: some
non-Newtonian pseudoplastic fluids show a time-dependent change in
viscosity; the longer the fluid undergoes
shear stress, the lower its viscosity. A thixotropic fluid is a fluid which takes a finite time to attain equilibrium viscosity when introduced to a step change in shear rate. However, this is not a universal definition; the term is sometimes applied to
pseudoplastic fluids without a viscosity/time component. Many
gels and
colloids are thixotropic materials, exhibiting a stable form at rest but becoming fluid when agitated.
The distinction between a thixotropic fluid and a
shear thinning fluid:
- A thixotropic fluid displays a decrease in viscosity over time at a constant shear rate.
- A shear thinning fluid displays decreasing viscosity with increasing shear rate.
Some fluids are anti-thixotropic: constant shear stress for a time causes an increase in viscosity or even solidification. Constant shear stress can be applied by shaking or mixing. Fluids which exhibit this property are usually called
rheopectic. They are much less common.
Don't you just love "Mum" and "Geeg" ~ this is why they are the Man Utd of Nail Tech. You both just blow me away!! I learn so much everytime I come to this site! Thank you both so much for sharing your vast wealth of knowledge. x
