My favourite product ever made!!! I use this every day and have done for years! I use it last, so after liquid foundation and setting powder, it gives a flawless finish to your make up! Nc15 for neutral tone skin, and in summer nc20. I never always leave the sponge out out of the case, and apply AFTER setting powder, if applied before ontop on foundation i find it gets damp and goes weird. You wont be disappointed using this as a finally finish, blurs everything covers everything its the best thing since sliced bread!!
Nothing, just remember to let your liquid foundation dry first before apply as it will wet the sponge applicator and then go onto the powder which causes it to get damp, and leave the sponge out :-)