PDO Thread Cog is mainly for face and jaw lifting.there are 18g,19g,21g and 23g with different length from 50mm to 120mm,it's injected to SMAS fascia layer.It can be used at areas of face,jaw and eyebrow.You can use different length and size according to different areas.Its effect could last for 6-12month. PDO suture is a proven safe material that is usually used for cardiac surgery. The inserted threads will be completely absorbed in 6-12 months, without remaining any foreign body.