Dust density profile in the SN ejecta of the 20 M_⊙ nonrotating progenitor with [Fe/H] = 0 within the ISM density of 0.05 cm⁻³. From top to bottom, each panel corresponds to the time of 200 yr, 1.2 × 10⁴ yr, and 2.9 × 10⁴ yr from the SN explosion. The blue, red, green, and orange lines represent FeO₄, AC, Mg₂SiO₄, and Al₂O₃ grains. The vertical dashed and dotted lines indicate the positions of forward and reverse shocks.