Apply moisturiser before the primer. [Even if you forget to apply moisturiser don’t worry INSIGHT primer has it all.]
Squeeze a small amount of primer and use as much as you need. Excess amount would result in looking oily.
Use your fingers to apply and blend.
Wait for the primer to dry, then apply foundation on your face.

Water, Cyclopentasiloxane, Dimethicone/Vinyl Dimethicone Cross Polymer