1. Introduction
Thank you for purchasing the Panasonic EH-ST99-N Ion Facial Device. This device is designed to enhance your skincare routine by utilizing ion technology to improve the penetration of skincare products and provide various facial treatments. Please read this manual thoroughly before use to ensure safe and optimal performance.
2. Safety Information
Always follow basic safety precautions when using electrical appliances. Keep the device away from water. Do not use if the device or power cord is damaged. Consult a physician before use if you have sensitive skin, allergies, or any medical conditions. Keep out of reach of children.
3. Package Contents
Verify that all items are present in the package:
- Main Unit (Ion Facial Device)
- Cotton Ring
- Protective Cap
- Stand
- AC Adapter (Power Cord)

4. Setup
4.1 Charging the Device
- Connect the AC adapter to the charging port on the device.
- Plug the AC adapter into a power outlet. The device supports AC100-240V with automatic voltage switching.
- Charge the device for approximately 1 hour. The charging indicator will show the charging status.
- A full charge allows for approximately 3 consecutive uses (based on a 10-minute basic plan).
4.2 Attaching the Cotton Ring (Optional)
For certain modes, a cotton pad can be secured with the cotton ring to aid in application.
- Place a cotton pad onto the head of the device.
- Secure the cotton pad with the provided cotton ring.

5. Operating Instructions
The Panasonic EH-ST99-N offers multiple modes for various skincare needs. You can use your usual skincare cosmetics with this device; no special products are required.

5.1 Understanding the Modes
The device features two main heads: the Pre-care head and the Ion head, each with distinct modes:

- Pre-care Mode: Uses the Pre-care head to prepare the skin for subsequent treatments.
- Ion Head Modes:
- Moisturizing: Designed to enhance the penetration of moisturizing ingredients.
- Brightening: Aims to improve the absorption of brightening agents like Vitamin C.
- Multi: Combines various ion treatments for comprehensive care.
- Skin Clear: Focuses on deep cleansing and refining skin texture.
- Cool: Provides a cooling sensation to soothe the skin and tighten pores.
5.2 General Usage Steps
- Cleanse your face: Ensure your face is clean and free of makeup before use.
- Apply skincare product: Apply your desired toner, serum, or cream to your face or directly onto the device head (if using a cotton pad).
- Select a mode: Turn on the device and select the desired mode using the control buttons.
- Glide the device: Gently glide the device head over your face, following the contours of your skin. Avoid pressing too hard.
- Treatment duration: Each treatment typically lasts around 10 minutes. The device is designed for approximately 3 uses on a full charge.
- After use: Turn off the device and clean the head as instructed in the Maintenance section.


6. Maintenance
6.1 Cleaning the Device
- Always turn off the device and disconnect it from the power source before cleaning.
- Wipe the device head with a soft, damp cloth. For stubborn residue, use a mild, non-abrasive cleanser.
- Do not immerse the device in water or rinse it under running water.
- Ensure the device is completely dry before storing or recharging.
6.2 Storage
After cleaning, place the protective cap over the device head and store the device on its stand in a cool, dry place away from direct sunlight and extreme temperatures.
7. Troubleshooting
If you encounter any issues with your Panasonic EH-ST99-N Ion Facial Device, please refer to the following common solutions:
- Device not turning on: Ensure the device is fully charged. If the battery is low, connect it to the AC adapter and charge for 1 hour.
- No sensation during use: Ensure the device head is in full contact with your skin. Some modes may have subtle sensations.
- Charging issues: Verify that the AC adapter is properly connected to both the device and the power outlet. Check if the power outlet is functional.
- Skin irritation: Discontinue use immediately. Ensure you are using appropriate skincare products for your skin type and not applying excessive pressure.
If the problem persists after trying these steps, please contact customer support.
8. Specifications
| Feature | Specification |
|---|---|
| Model Number | EH-ST99-N |
| Power Supply Method | Rechargeable |
| Charging Time | Approximately 1 hour (at 15-35 ℃ room temperature) |
| Consecutive Uses (Full Charge) | Approximately 3 times (based on 10-minute basic plan) |
| Power Consumption | Approximately 10W (when charging) |
| Batteries Used | Lithium-ion batteries |
| Body Dimensions (H x W x D) | 21.4 x 5.3 x 6.5 cm |
| Mass | Approximately 180g (excluding cotton ring, protective cap, and stand) |
| Voltage | AC100-240V (with automatic voltage switching) 50-60Hz |
| Cord Length (AC adapter) | Approximately 1.8m |
| Accessories | Cotton ring, protective cap, stand |
| Country of Origin | China |
| Color | Gold |
| Material | Cotton (for ring) |
9. Warranty and Support
9.1 Warranty Information
This product comes with a manufacturer's warranty. Please refer to the warranty card included in your original packaging for specific terms, conditions, and duration. Keep your proof of purchase for warranty claims.
9.2 Customer Support
For further assistance, technical support, or service inquiries, please visit the official Panasonic website or contact their customer service department. Contact information can typically be found on the Panasonic website or in your product packaging.





