没事做了下research, 不过这个study里的微针是在专业美容院做的。复制一下result： Patients received one to six consecutive monthly microneedling treatments. All scars improved at least 50 percent after an average of 2.5 treatments. Over 80 percent of patients had 50 to 75 percent improvement, and 65 percent of patients demonstrated over 75 percent improvement. No significant clinical differences were observed in treatment responses of facial scars versus nonfacial scars nor between responses of atrophic acne scars and traumatic or surgical scars.
Patients received one to six consecutive monthly microneedling treatments. All scars improved at least 50 percent after an average of 2.5 treatments. Over 80 percent of patients had 50 to 75 percent improvement, and 65 percent of patients demonstrated over 75 percent improvement. No significant clinical differences were observed in treatment responses of facial scars versus nonfacial scars nor between responses of atrophic acne scars and traumatic or surgical scars.
Sample size: 120
微针：Sterile disposable needle cartridges (30-gauge, 36-needle array)。
微针长度： 2.5-3mm。（这个长度吓到我了不知道家用的效果会怎样）。
抓住问下MM用的什么电动牌子？