The Ballad of Adler Young, Canto 2.5

SALV Chesswick, realize that not only you used the fur restorer directly (while the instructions clearly read that it should have been diluted before use), the regular one was switched with an extra strength version. Fur, keep growing (similar to the hair growing potion from Asterix) .

>Fur: In addition to keeping growing, change colour now and again (cf: Thompson and Thomson in Tintin's "Destination Moon").