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Quantity
1
Description
Finisher Peroxide Treatment is the final step in the Double Black Interior Cleaning System, designed to leave interiors truly clean and fresh. It targets odor causing molecules and lingering organic stains, breaking them down for complete r...
Reviews
5.0
48 ratings
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Meh.
I’m honestly not convinced this step is necessary for most jobs.
That said, if you do decide to use the Finisher Peroxide Treatment, make sure everything is fully dry first before applying it. Otherwise, you’re likely just diluting it and reducing its effectiveness.
Pros:
May help as a final step depending on your process
Cons:
Likely unnecessary for most standard interior cleaning
Adds extra time/step without clear benefit
Bottom line:
Optional at best. If you use it, apply it properly—on fully dry surfaces—but most people probably won’t need it.
M
Matt · April 14, 2026
Not just for cars
Certainly good for car carpets and upholstery.
Also great for spraying indoor carpets after cleaning up dog messes.
I have one bottle in the garage for the vehicles, the other is in my wife's arsenal of indoor cleaning supplies.
This is the 2nd bottle that I bought. I needed one for the garage after the first bottle was claimed by the Boss.