Dust-temperature profiles for OH 127.8+0.0 as modeled with MCMax. The full colored lines indicate the specific dust species: cyan for amorphous silicates, red for metallic iron, blue for forsterite, green for enstatite, magenta for amorphous H₂O ice, and yellow for crystalline H₂O ice. Each of these profiles are cut off at the condensation temperature. The dashed black line gives the mean dust temperature profile. The full black line shows the power law from Eq. (2), with s = 1. The vertical dashed line indicates the inner radius of the dust shell.