How to Choose Derma Roller – Microneedle Roller Length Selection
The picture below depicts the relationship between the Face Derma Roller and the skin tissue. Skin tissue is divided into four layers, namely the stratum corneum, epidermis, dermis and subcutaneous tissue. Microneedles of different lengths can pierce the skin tissue at different positions and produce different effects. 0.2 – 0.3mm Microneedles Roller The microneedle of 0.2 …
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