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Different needle lengths have different usages
1. Home use: 0.2mm
2. Clinical use: 0.5mm/0.75mm
3. Medical use: 1.0mm
4. Physician use: 1.5mm/2.5mm/3.0mm
Cleaning recommendations
1. Soak about 5~8 minutes with 75% alcohol.
2. Using ultraviolet to disinfect for about 45 minutes.
3: Try it on the back of your hand so you can get a feel of the right pressure
4: Make sure your face is completely clean when you start this
5: Never apply force when rolling it on your face
6: Use for 10-15 minutes
7: Allow your skin a few days of rest every week
8: Never use on open pores
9: Submerge roller in Hyrogen Peroxide or Achohol to disinfect.
10: Follow up treatment with a nice moisturizer or vitamin C serum to get your skin looking great
Note
Make sure you do not have an allergic reaction to this instrument and do not use on eyelids.