Radial profiles of chemical and dust-related quantities. The temperature of the SPH gas, with which the dust is assumed to be fully thermalised, is shown in red. Left: the logarithm of the third moment 𝒦₃ (blue), which represents the number density of condensing monomers from the gas phase into the dust, shown together with the dust opacity profile (green). Right: the mean molecular weight μ (blue), polytropic index γ (green), and the base 10 logarithm of the supersaturation ratio S (magenta) of the gas in the wind. A supersaturation ratio above unity implies favourable conditions for dust formation.