Buyer attention:
You need to pressurize first, then rotate the adjustment scale, so that when you use it, the pressure would be very strong, the effect is also very good, the amount should be controlled every time, do not use too much at a time.
Some buyers said that it does not have enough pressure to push acid into the skin although they see many videos before using, that maybe because you did not pressurize first, then rotate the adjustment scale, only if you pressurize first, then rotate the adjustment scale, can the pen has enough pressure to push acid into your skin, instead of "the product splattered all over my skin"
Please note that the steps of the operation and the capacity absorbed will affect the pressure of the product. Mastered the skills, you will find that the product works very well