Oko closed last November, and while this salon certainly doesn't bring anything new to the avenue (expect for a faint bluish-pink glow after sunset), it's better than an empty storefront. For a brief period of time a restaurant called Chez Bibis Burger Bar was slated to go into the space, but that never materialized.
No Yelp reviews yet, but it seems pretty inexpensive: one poster on Brooklynian got a trim for $14. Manicures are $8 and Brazilians are $30.
Silky Hair and Nail Salon, 152 Fifth Avenue Brooklyn NY 11217. 718-789-8887.