c7b27db1_Borderlands_2_Wiki_Guide___IGN__Description
[Skill] Flame Flare [Tier] 4 [Levels] 5 [Description] 
Increases the duration of all Burn Effects on you. Each time you apply Burn Effect to an enemy, there's a chance another Burn Effect will be applied after a short time.
Psycho (Class) - Borderlands 2 Wiki Guide - IGN