4S Screw Thread is mainly used for curing wrinkles at face and body(throat, nasoiabial fold, labiomental fold, suborbital area), and is also good for facial tightening. In addition, 4S Screw Thread is playing supplemental function in contouring body line at face, chin, forarm, abdomen and hips.
The spiral in targeted dermal layer, wrinkle reduction and body contouring effect of which lasts for 1-2years.