What Would Be Best for a Young Patient with a Gaunt Face and Tear Trough Deformity?

I'm in my mid twenties and have bags under my eyes that won't seem to go away with creams and sleep - realized i have what is called a tear trough deformity. My cheeks are very sunken and flat. My skin is very clear (thank goodness!) and smooth but it only causes the gauntness in my face to stand out more. My question is what type of filler would be best (and is most affordable) and where should it be applied? or would an implant best suit? thank you for your answers.