Collagen to fill the tear trough, simply a collagen cost is about 1500-5000 yuan range, but the total cost of filling also consider the injection fee, plus the injection fee after the cost of collagen to fill the tear trough is about 3000-12000. When filling the tear trough with collagen, the exact price varies depending on the brand of collagen chosen, the grade of the hospital chosen, and so on. Also, the amount of filler needed varies depending on the degree of depression of the tear trough. For example, for a first-tier tertiary hospital with mild bilateral tear trough depressions, the cost of collagen of a medium-priced brand plus the injection fee will generally cost around 4,000 for a single side. If the bilateral tear trough depression is heavier, filling to the ideal state requires 2 or even more collagen, the cost will increase accordingly. In addition, the general cost of the procedure will be higher for a more senior doctor compared to a less senior doctor. For the specific cost of collagen tear trough filling, patients are advised to consult a specialist at a regular medical institution.