How do you apply a certain kind of foundation stick thing?

if you are looking for a really good makeup...i use dinair airbrush makeup and it is honestly the best makeup i have ever used. it works as a concealer and foundation on one, which is really nice because it blends really well and covers everything. also you only have to buy the one product...its awesome. it covers up everything and makes my skin look flawless...its also water based so its not bad for my skin...its pretty rad!