De or het rimpelvorming?

The correct Dutch article is:

de rimpelvorming

Rule Words ending in -ing: almost always de. See the rule

How to use rimpelvorming

the rimpelvormingde rimpelvorming
this rimpelvormingdeze rimpelvorming
that rimpelvormingdie rimpelvorming
our rimpelvormingonze rimpelvorming
your rimpelvormingjouw rimpelvorming
every rimpelvormingelke rimpelvorming
which rimpelvorming?welke rimpelvorming?
a big rimpelvorming / the big rimpelvormingeen grote rimpelvorming, de grote rimpelvorming