Why Are Tear Trough Medpore Implants Discouraged?

i have thin skin all over-even my body has such thin skin the veins are visible(not varicose certainly)-and i have respnded poorly to restylane in the area injected deep(the restylane would slide down and cause me puffy frontal cheeks,why is this??) why do some doctors discourage medpore implants in that area? my tear troughs are slight, but since i am 26 only, i want to correct them .

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