I've read this before about that product, it isn't just you. I have a tester size, haven't exactly had a film but I could sense that it was going in that direction on one time I used it. I'm not sure what I make of it, but I definitely find I can use less of it in one go than my usual Keracare leave in because of it building up. But, it was quite good one day as a refresher scrunched into second day hair after dampening, I use only a small amount for that.

Sorry it wasn't quite what you hoped. Maybe you can make it work somehow yet though.
UK based wavy

Mostly waves, but curls and straight bits too!
Fine to medium, high porosity, medium density, very low elasticity
Highlights damage (growing it out), seems to like protein and need lots of moisture.

Cleanse - CJDF, trying out low poos ; Co wash- Uk chemist brands, Urtekram Rose or Aloe, Hairveda Amala Cream Rinse; RO - varies, Tigi Moisture Maniac, Desert Essence Coconut ; Leave in - Keracare natural textures; Sealant - argan oil
Trying out new things, still looking.