Oily
If it begins to look shiny shortly after cleansing & washing, or if it is prone to enlarged pores and regular breakouts.

Combination
If it is oily on the T-zone and thicker in texture in the oily areas of the face, or if it is prone to enlarged pores and blemishes.

Dry
If it feels extremely dry and taut shortly after cleansing & washing, or if it lacks elasticity, has a coarse texture, and is prone to premature ageing.