Trueself 400 uses the poly-L-lactic acid ultrafine particles which was created by Chinese and American scientists and experts. They have accumulated more than 20 years of laboratory and clinical experience. The particle size of Trueself poly-L-lactic acid is 3-10um (average particle size: 7um), it is also the smallest particle and the most uniform product in the global market. Trueself 400 is mainly composed of poly-L-lactic acid, it helps rebuild lost collagen and make you younger. It can last for more than 25 months. Safety And Advantage â?¦3-10um microparticle poly-L-lactic acid The smallest particle of 7um on average can reduce the risk of nodules, and it is easy to dissolve and operate, with diversified operation methods and locations. â?¦Poly L-lactic acid combined with HAP With HAP as dispersant, it has better dispersibility and suspension â?¦Hydrophilic group with HAP Using HAP as a hydrophilic group can reduce the stimulation of tissues by other organic solvents, and avoid inflammatory reactions. â?¦Repetitive treatment can superimpose collagen regeneration Poly L-lactic acid and HAP can be metabolized in tissues. Repetitive treatment can superimpose collagen regeneration. One course of treatment can keep at least 25 months. Pakage and specification 2 vials/box 400mg freeze-dried powder/vials(PLLA) Diluted with 8-12ml of injection water PLLA microspheres size 3-10 �¼m Indication 1.Soft tissue repair: temples, lacrimal groove, cheeks inside and outside, nasolabial furrow, forehead, mouth angle furrow, etc. 2.Improvement of scar tissue: Acne pits and prints improvement 3.Facial wrinkle reduction