- Do not use the machine on one spot for long time or press to hard.
- It can have less effect if you use too fast.
- Use 1-2 times for a week if you have sensitive skin. ( Stop using the machine if you see red spot or feel itchy.)
- Clean with fabric or tissue after using it.
- If you use too long, it may cause problem on your skin.

Please check before you purchase.
- Please put metal allergy protection cream if you have sensitive skin.
- Coating can be removed if you use oily cosmetic. Please clean it using soft fabric after using with oily cosmetics.
- Even though roller does not roll well at first, it will work well after using few days.