
The barbell front raise is a shoulder exercise used to target the front deltoids.
Use of the barbell can allow you to overload the muscles to a greater degree than one may be capable of doing with dumbbells.
The front deltoid is involved in several pressing movements and working to increase the strength of this muscle group can have a positive carry over into your heavy pushing lifts.
From an aesthetics standpoint, bigger front deltoids can lead to an appearance of a complete set of shoulders and wider framed upper body.