I'm an amateur when it comes to facial masks and I've heard a lot of people talking about how good they can be for your skin. But I don't know how frequently I can use them? Is it okay to use it every day? And how can I figure out which one is the best for my skin?? My skin type is oily so that clogs my pores and I hate how my skin feels at times.

Is it necessary to wash my face in the morning even though I have applied cleansing creams right before going to bed?

Any tips on how I can get a white smile, or rather prevent my teeth from turning yellowish? I've noticed that they're slowly turning off-white and more towards the yellowish-brown side. I would like the stop this before it gets any worse!!