It looked like poor Riker was having trouble keeping his beard on.
The skullcap in your presumably 20 years later avatar is much more convincing than Picard's.
Sadly, that isn't a bald cap in my avatar... although I'm sure you knew that... lol.
The bald cap in the film was actually a white swimming cap. We couldn't find a bald cap on short notice, so the actress playing Troi painted it with foundation makeup to match my skin tone.