... sizes are available 4.professional OEM service,print micro-needle treatment,beauty roller ,micro needle roller ,skin needle roller .high ... PC plastic. May help :1.Accelerate cell turn over2.Treatment for hair loss,thin hair3.Clear skin tone,4.Improve skin texture ... is by way of the stimulation the dermis layer of collagen and fibroblast proliferation, because of microneedle stimulation, may remove ...