... more than 200,000 microporous)3, The side effect is extremely low4, The micro needle massager has remarkable effect, ... . As such, they can reduce striae of pregnancy.3.MTS Rollers are safe. “Non-surgical and non- ... skin care products, the effective of the micro-needle exceeds 40%).(3) The active nutrients accumulate in the skin ... bone collagen and stimulate the cell regeneration. Micro needle roller