Hair roller assembly apparatus and method of use

A hair roller comprising:

• a whole cylindrical body separable into a pair of half-cylindrical roller pieces,
• wherein each of the half-cylindrical roller pieces represents a symmetrical division along a vertical axis of the whole cylindrical body;
• wherein each half-cylindrical roller piece is separable from the other half-cylindrical roller piece along a lateral edge on each side of each half-cylindrical roller piece;
• wherein each half-cylindrical roller piece is capable of being nested within the other half-cylindrical roller piece;
• wherein each half-cylindrical roller piece includes a plurality of mating devices configured to selectably couple the pair of half-cylindrical roller pieces to form the whole cylindrical body;
• wherein each mating device comprises a tab extending outward from the lateral edge of one half-cylindrical roller piece and an orifice near the lateral edge of the other half-cylindrical roller, wherein the tab includes a protuberance which protrudes from a surface of the tab into the orifice;
• wherein the protuberance on each tab is on an outer surface of the tab;
• wherein each protuberance has a proximal edge which engages a distal edge of the corresponding orifice, wherein the outer surface of the protuberance tapers down away from the proximal edge to the distal end of the tab, and the tab extends beyond a proximal edge of the corresponding orifice;
• and
• wherein the outer surface of the half-cylindrical roller piece is tapered toward the proximal edge of the orifice forming a ramp, and the inner surface of the distal end of the tab is positioned over the outer surface of the ramp.