Product review (5 stars): good replacement filters
These work really well.  This is my second order of these filters (six sets of these two packs).  I've gone through three (individual) filters in five months.  The left side of the Braun Allure QC2 re-circ vent is where the fan is so it needs to be replace twice as often as the right side.  These charcoal snap in filter do the trick.  These filters really absorb a lot of the vaporized oil and odors - I'd say even better than most re-circ vents.  All filters fit the QC2 and all have the white change strip indicator.