This answer states
One of the more innovative uses of Velcro included putting a patch into EVA suits to assist in scratching the astronaut's nose.
Considering that Velcro has two different textures (hook and loop) which adhere together, which side was used for the nose-scratching patch?
Update: Russian spacesuits have a different solution to the problem: a spongy piece of foam in the helmet. It also allows the cosmonaut to hold the nose shut while blowing, allowing a hands-free Valsalva maneuver which is useful for equalizing pressure in the ears.