Evangelion's Rei Ayanami Models Nude Lipstick
Goth Rei with Vespa : evangelion
Radio Eva [Evangelion] Rei Ayanami 1/7 Scale Figure
Evangelion Rei Ayanami and Mari Makinami Figure Prototypes Appear
Rei is with Asuka and Toji in a secure location.
If Rei owned lipstick, this is definitely where she would keep it.