They are also called reversible sols . "'Hydrophobic colloids "': These are opposite in nature to hydrophilic colloids.
2.
Based on the nature of interaction between the dispersed phase and the dispersion medium, colloids can be classified as : "'Hydrophilic colloids "': These are water-loving colloids.
3.
In 2005, the Australian Dr . Andrew Tuan-Anh Le published a pilot study reporting successful corrective outcomes using the soft-tissue filler polyacrylamide gel ( PAAG ), a hydrophilic colloid injected to the tissues of the nasal defect, and known commercially as Aquamid.
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