Skin Care Products

i am 24 years old. i am quite shy sometimes when facing people. i am not that prone to pimples ever since i entered college way back in 2001.
but there are scars already. i cant put on a face powder or foundation. do concealer can do the works? the scars are deep.
its so expensive to go to the derma.
and sometimes going to the derma, is not enough. they would check what’s the best treatment. there are many sessions.
and when you stop the treatment, there are probable side effects. so what is the best regimen that i can do with my scars. what are the best over-the-counter skin care products for scarred skin(mild ones) and the best way to conceal them and with othe other breakouts especially when going out, so i would not feel shy when i socialize with people and still feel confident. please help. i need all of your advices.
thank you..