Plastic cleaner: How often?

[CEE DOG]

I can't find any manufacturer recommendation.
How often does everybody apply Plexus to headlights and tailights?
How often does everybody apply Plexus to tinted windows?
For a garaged car that drives about 4 days a week.
It does sit in the sun about 2-3 days a week during the day.

[Rsurfer]

I use Plexus on my interior windows every 6 weeks or so. I do use a sun shade. As far as my headlights and taillights are concerned, I just use whatever sealant/wax I'm using on my paint.

[Superdutytd]

I use Plexus on my interior windows every 6 weeks or so. I do use a sun shade. As far as my headlights and taillights are concerned, I just use whatever sealant/wax I'm using on my paint.

I polish/seal/wax headlights/tails just as I do the paint. :iagree:

[Emile]

I polish/seal/wax headlights/tails just as I do the paint. :iagree:
+1, I've never tried a wax to date that didn't bond to the plastic headlights and tail lights.

[ScottB]

I use Plexus or DP Plex-All weekly after washing on lamps. I dont religiously use on tinted windows but clean interior glass monthly.