P21S vs P21s over Souveran on black?

[garageboy]

I`m planning to top P21S over Souveran per Jngrbreadman suggestion to make my car less dust-magnet. I know the effect of Souveran on black.



But what effect does P21S do to a black car?

[Brodydog]

I`ve done it as a test. No discernible appearance difference over Souveran on black. Maybe it lasts longer, but there was no problem and no lack of shine/depth. FWIW



It does attract less dust than Souveran. P21S by itself on black has slightly less depth, but over Souveran I detected no difference other than less dust.