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 w/ facial cleanser;
3. Roll the roller back and forth on your face for 3~5mins while dropping functional nutrition on your face at the same time;
4. Do not roll hard for the first time use;
5. Apple moisture mask on your face and do not wash it away.