What filler to choose - Hi my question is, what's the difference between Restylane and Restylane Silk?

Regular Restylane is thicker and more likely to cause bumps or nodules when used in thin skin areas like the lower lids vs #restylane silk which is thinner and less likely to cause these problems.Restylane® Silk has recently been approved by the FDA for release in the United States. It’s the first and only approved product specifically designed for smoothing wrinkles and lines around the mouth, as well as replacing lost volume. 

Both are safe FDA approved
hyaluronic acid fillers. Restylane Silk can be injected in a more
superficial dermal position. Restylane is a soft tissue filler injected below the dermis for fine upper lip wrinkles. I
would consider using a hyaluronic acid filler like Restylane for the tear
trough correction, which will not cause

significant swelling and can last for over a year. This should be done in the
hands of a Board Certified
Plastic Surgeon or Dermatologist.