You Do Need power plug adapter while traveling from French Guiana to Burkina Faso.

Here is Why You Need An Adapter

The outlet and plug type used in Burkina Faso are C and E and in French Guiana are C, D and E. This is how they look like.

French Guiana

In French Guiana, outlets of type C, D and E are in use.

Type C

Type D

Type E

Burkina Faso

In Burkina Faso, outlets of type C and E are in use.

Type C

Type E