Scottie waits for Judy at her apartment and is awed when she returns looking almost exactly like Madeleine.
It's not quite right, though. Judy reluctantly complies with Scottie's request that she apply the finishing touch by putting her hair up exactly the way Madeleine used to.
Judy goes into the bathroom to fix her hair, and when she comes out, it's as if Madeleine has returned.
Hitchcock bathes her in an eerie green light to make the moment even more surreal.
Scottie, in a daze, grabs her and kisses her passionately.
Their kiss transports Scottie back to the stables at San Juan Bautista, where he had kissed Madeleine. The makeover is complete.