If shiny or oily T-zones or under-eye creases are your main bother, Proartes small powder brush is the best solution. Its meant to extremely-lightly your liquid/cream foundations or polish and blend out powder foundations, depending on your needs. Made using ZGF Goat Hair, the bristles are soft and durable, making it impossible to get a bad application.

Features:

Works best for small unreachable areas
Gentle on your delicate skin
Very convenient to use, Carry and store.
Made using ZGF Goat Hair
How to use:

Use the fluffy bristles to lift a fine layer of loose powder and dust it over your T-zone and under your eyes.
Pack the product to your makeup or use a light dusting to instantly fix your foundation or concealer.