As an additional option for your PCB, you can choose to have silkscreen on TOP Layer or BOTTOM Layer, you can also select silk screen for both TOP and BOTTOM Layer.

The silkscreen used in PCB-POOL® is white and can be printed on either or both sides (TOP and BOTTOM). To avoid printing on pads the silkscreen in PCB-POOL® is clipped away from corresponding soldermask pads by 0.1 mm. If you wish to order silkscreen, please note that adhesion, in accordance with the IPC standard, is only guaranteed when you have soldermask applied to your PCB.