Nadia’s hair — besides looking great ... Alan’s presence magnifies Russian Doll’s message about helping and accepting help from others, but Horse serves as a key impetus for Nadia ...

While cutting her hair Horse gestures to the severed locks ... way through the loony bin that is space and time. Ergo, Horse is Russian Doll's equivalent to the Trojan Horse.

Horse is a homeless man sleeping rough in New York City, who makes his debut appearance in the first ever episode of Russian Doll, where Nadia immediately feels some kind of connection with him.