Other mistake: At the end, Rosemary is attacked by Mrs Potts with a large knife that cuts Rosemary on the left arm, but there's no blood, anywhere.
Other mistake: When the girls see Dan in hospital, his IV is dripping, but in another shot we can see that the wheel on the IV that controls how fast the IV is dripping is turned off; it's right at the bottom, so it can't be dripping.
Other mistake: When we see Sam driving, not once does he turn the steering wheel, not even a centimetre, and not when he has a heart attack and collides with a truck.
Other mistake: If Laura's sore is only on the back of her hand, why does she need a bandage that goes all the way down to her elbow?
Other mistake: At the beginning, Alisa is supposed to be putting cream on her husband's left arm, but, while she has a great glob on her fingers, no cream ends up on the arm.
Chosen answer: As far as hanging new wallpaper, there is no need to brush on any additional product once it has been pasted to the wall. It appears Helena may be doing an extra decorative step by applying a liquid glaze over the wallpaper to give it a more distinctive look, perhaps creating a sheen effect on the surface. Glaze can also be tinted to give a muted colored tone. It could also be a protective sealant. However, to remove old wallpaper, a product is brushed on that dissolves the old paste so the paper can be easily scraped off.
raywest ★