Chimerical cantrips do not require the player to spend Glamour. Wyrd cantrips require the player to spend one point of Glamour. Using a Realm or level of a Realm the character does not possess (p. 232 CTD), increases the total cost of the cantrip by one Glamour for each Realm “cheated.” Players pay all Glamour costs for a cantrip before rolling the dice.

Under your Art, in the book, for each level there is a category called “Type” you can see if you are sending Glamour or not there.

Chemical = No Glamour
Wyrd = Glamour