The reason to display Healy display black circle as below :
- The acidic body is relatively high,
- Insufficient skin moisture,
- The body’s bioelectricity is not strong.
Reasons for small reaction at the irritation site:
One thing you have to know is that the micro-current voltage that charges the cells is very low. This stimulation feels unlike other products that are easily reflected to the brain by skin or nerve stimulation.
Because the cell current does not touch the skin and the nerves are reflected to the brain, it does not feel strong or does not feel normal, but the program works normally.
There is a saying in traditional Chinese medicine: Pain makes no sense, that is, a certain biological potential is blocked or unbalanced, so that the fluctuations slow down and the nerves are reflected to the brain. If the fluctuation is fast, it is normal for the stimulus response to be small. This is a bioelectric science research and development, not a physical product.