2.5mm is suitable for beauty care center
Instruction:
1. Use medical alcohol (75%) to disinfect the derma roller and the area of the skin which to be treated
2. Clean your face
3. Apple one drop of functional nutrition on your face, then roll it back and forth on your skin for 3~5mins, do not roll hard for the first time use
4. Apple moisture mask on your face and other skin-care product