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Frequently asked questions

Below is a list of the most commonly asked questions about the device. If you do not find the answer to your question here, please email us for more information.

femooi Nano Meso Scalp Care Device Usage

What is the duration of a single treatment session?

  • For Nano Meso Mode, the treatment on a single area should not exceed 3 minutes. You can adjust according to the usage area.
  • For Daily Care Mode, a full head massage can be done, lasting up to 10 minutes.

Do I need to use the entire serum bottle at once, or can it be used multiple times?

The serum can be used multiple times, generally lasting 1-2 weeks, depending on individual use. There is no need to repeatedly remove the serum bottle after each use until the liquid inside is fully used up. Please replace the bottle promptly when it is empty.

Can the needle chip be used multiple times?

The needle chip is for single-use only. Prolonged storage after opening can lead to bacterial growth and infection. Do not reuse it.

Can the Nano Meso Mode of the femooi Scalp Care Device be used daily?

It is recommended not to use it more than once every two days. Three times a week is optimal, but you can adjust the frequency according to your scalp condition.

Can the Daily Care Mode of the femooi Scalp Care Device be used daily?

Yes, it can be used daily. Daily use is helpful to massage and soothe the scalp, and can enhance the care effects.

Who should not use the femooi Scalp Care Device?

  • During pregnancy or breastfeeding
  • Individuals under 16 years old
  • Those with scalp inflammation or skin cancer on the scalp
  • Those with head wounds, who have undergone surgery, or have metal implants
  • Those with allergic constitutions, sensitive or fragile skin
  • Individuals with a history of photosensitivity to the wavelengths emitted by this product
  • Those in a state of extreme fatigue, illness, after drinking alcohol, or taking sleeping pills
  • Those with capillary dilation due to long-term use of steroids, hormones, or liver dysfunction
  • Those taking photosensitive drugs, such as griseofulvin, ofloxacin, hydrochlorothiazide, etc.
  • Those using medical devices such as artificial lungs, pacemakers, internal defibrillators, or portable devices like ECG monitors.

Why does not the indicator light of the femooi Scalp Care Device blink after connecting the charging cable?

The charging cable or power plug of the femooi Scalp Care Device is not properly connected.

Why does not the femooi Scalp Care Device respond after pressing the mode button?

  • It is turned off. Please press and hold the power button for 1 second to turn it on.
  • The battery is depleted. Please recharge promptly.
  • The EMS metal pins are not in contact with the skin. Ensure the operation head is perpendicular to the scalp surface and all 4 EMS metal pins are touching the scalp.
  • The Daily Care Mode has a 3-second delay start mechanism.

Why can't the femooi Scalp Care Device connect to the mobile app?

  • The femooi Scalp Care Device is turned off. Please press and hold the power button for 1 second to turn it on.
  • The device has not been added to your femooi Account. Activate the device in the femooi app and follow the instructions to connect via Bluetooth.
  • The phone’s Bluetooth is not turned on. Please enable Bluetooth.
  • There is a temporary malfunction in the microprocessor. Please restart.
  • Bluetooth permissions are not authorized in the iOS or Android system. Please grant authorization.

Why doesn't the femooi Scalp Care Device work after being turned on or used for a while?

  • The battery is depleted. Please recharge promptly.
  • People with dry skin may occasionally experience insensitivity. It is recommended to wash the scalp and hair, towel-dry to semi-dry, or use a wet wipe to clean the area before use.
  • The EMS metal pins are not in contact with the scalp. Separate the hair, ensure the operation head is perpendicular to the scalp surface, and make sure all 4 EMS metal pins are touching the scalp.
  • The device has an overuse protection setting. After 3 minutes of continuous use in Nano Meso Mode or 10 minutes in Daily Care Mode, the device will stop all functions and enter idle mode, with the mode button indicator turning red. To continue using, simply select the mode again.
  • The Daily Care Mode has a 3-second delay start mechanism.

Why does the femooi Scalp Care Device start operating in Nano Meso Mode without touching the skin after selecting the mode?

  • The device has a smart touch sensor system. There might be serum or water droplets left on the EMS metal pins resulting in a false detection. Please wipe the operation head and EMS metal pins with a tissue or dry towel.
  • The interior of the device head is wet. Please clean the head, let it dry completely, cover it, and place it upright for 24 hours before retrying.
  • There is a temporary malfunction in the microprocessor. Please restart.

Why does no serum come out during the use of the device?

  • The serum bottle is newly installed and unused. Please press and hold the mode button for 4 seconds to fill the serum before use.
  • The serum bottle is empty. Please replace it with a new one.
  • The serum bottle is not installed correctly and is loose. Please follow the “Serum Bottle Installation Guide” in the product manual to install it correctly before use.
  • The serum flow is turned off in the app settings. Please enable serum flow in the app.
  • After prolonged storage without timely emptying, residual serum can cause blockages. Please use the app to select the device unclogging function to clear the blockage.
  • In Daily Care Mode, serum flow is turned off by default. If you need to use serum during Daily Care Mode, please enable it in the settings.
  • In Nano Meso Mode, to prevent excess serum flow causing drips, the device only dispenses serum when it first makes contact. For multiple dispensations, simply lift and press the device against the scalp again.

Can the femooi Scalp Care Device get clogged by serum?

  • The device is specially designed to prevent serum clogging during normal use. For better user experience, if you do not plan to use the device for a long time, please remove the serum bottle and press and hold the mode button for 4 seconds to empty the liquid in the device’s pipes to avoid blockages from long-term inactivity.

How to clean the femooi Scalp Care Device?

  • It is recommended to wipe the device head with an alcohol pad after each use.

What are the differences between the three modes of the femooi Scalp Care Device?

  • In Nano Meso Mode, EMS works in conjunction with low-energy laser (LLLT), serum, and Nano Meso for strong serum infusion, ideal for targeted area treatment. The low and high levels affect the scalp in the same way, only differing in serum infusion intensity. In Daily Care Mode, EMS and low-energy laser work together to repeatedly massage the scalp, effectively relaxing it.

What are there recommended vibration and EMS levels?

  • For first-time users and those with sensitive scalps, it is recommended to use the low level and gradually increase as you adapt.
  • You can also adjust the level intensity according to your scalp’s tolerance.

How long should the serum in the bottle be used after opening?

  • To ensure effectiveness and the activity of nutrients, it is recommended to use the serum within one month after opening.

Will there be any pain during the use of the device?

  • The needle chip may cause a slight pricking sensation on the scalp, but it should not cause severe pain. If the pain is intense, it might be due to EMS stimulation of the scalp. You can adjust the Nano Meso Mode level and EMS intensity level in the app to a comfortable range.

What if I don't feel the serum coming out during the use of the device?

  • When the scalp is moist, properly pressing the device in Nano Meso Mode will dispense the serum. To avoid excessive serum flow from prolonged use on a single area, the Nano Meso Mode is programmed to dispense serum only once when first pressed. Use the correct pressing technique and avoid pressing too quickly. You can hear a “pump” sound when the EMS metal pins first make contact with the scalp, indicating serum release. Additionally, Daily Care Mode does not dispense serum by default; you can enable serum dispensing in the app.

Can the femooi Scalp Care Device be used with other scalp serums?

  • Yes, the device can be used with other scalp serums. You can apply other scalp serums during the daily care period and use the device’s massage mode for daily scalp massage care after application.

Do I need to charge the femooi Scalp Care Device before use? How long should the first charge be?

  • It is recommended to charge the new device before use. The first charge should take about 4 hours to fully charge the device.

How long does it take to see results from using the femooi Scalp Care Device?

  • The har care effects of the device have been professionally tested by third-party testing agencies. According to real user test results, after 4 weeks of consistent use, you can notice a significant reduction in hair loss, improved hair greasiness, and a healthier scalp environment. After 8 weeks, you can notice a narrowing of hair parting and an increase in new fine hair at the hairline.