- Hydrophilic colloids.
- Hydrophobic colloids.
Hydrophilic colloids are water loving colloids. The colloid particles are attracted towards water. This type of colloids are also called reversible sols.
Hydrophobic colloids are opposite in nature to hydrophilic colloids. The colloid particles repelled by water. The colloid particles are further away from the water. This type of colloids are called irreversible sols.