The advantage of cheeks rich in hyaluronic acid is injection. It's the same as an injection, but there is slight swelling and pain locally, no great pain and no recovery period. The injection will not affect daily work and life. Moreover, human tissues will not produce rejection reaction, and the effect is safe and natural, which is softer and more natural than prosthesis.

There are also shortcomings, that is, the maintenance time is not long, generally 6- 12 months, and individual long-acting hyaluronic acid maintenance 18 months requires regular injection.