Figure 1. Water-holding capacity of the skin as a function of glycerol concentration (v/v%)

Applied after SLS acute irritation; solid line represents the sigmoidal regression of the plot (Chapman, 3 parameters, R² = 0.987), and dashed lines delimit the 95% confidence band; increasing glycerol concentration on irritated skin favors water content of the skin with a plateau phase of action (taken from Reference 9).