Carbopol Aqua CC polymer’s hydrophobic interaction with
other components and its ability to complex with acidic
actives, provides formulators with advantages when creating
low pH formulations. To demonstrate this, different levels of
AHA (glycolic acid) were incorporated into a screening formulation
(Table 2).
For comparative purposes, all pH levels were adjusted to
3.5 prior to measuring viscosity and yield value. Figure 2
shows the viscosity and yield value that Carbopol Aqua CC
polymer provides when used with different levels of glycolic
acid. This interaction offers considerable formulation flexibility
at low pH levels.