1. Introduction
The FOREO LUNA 4 is an advanced 2-in-1 device designed for deep facial cleansing and firming massage. It features ultra-hygienic silicone and 16 adjustable intensities of T-Sonic pulsations, offering Gentle, Regular, and Deep cleansing modes. The device also provides lower-frequency firming massage routines to promote smoother and younger-looking skin, and enhances the absorption of skincare products.
2. What's in the Box

Image: Contents of the LUNA 4 packaging, showing the device, travel pouch, quick start guide, USB charger, and basic manual.
- LUNA 4 Device (Combination Skin)
- Travel Pouch
- Quick Start Guide
- USB Charger
- Basic Manual
3. Setup and Activation
3.1 Unlocking Your Device
Before first use, download the FOREO For You mobile app to unlock and register your device. Follow these simple steps:
- Download the FOREO For You app on your mobile phone.
- Log in to your account or sign up for a new one.
- Add device (on the top of your screen).
- Choose device series.
- Press and hold the Power button to connect your device to the mobile app.
- Fill in the purchase information.
Your device is now ready to use!

Image: Instructions for unlocking the LUNA 4 device using the FOREO For You mobile application. For more information, visit foreo.com/app.
4. Operation
4.1 Deep Cleansing Mode
- Dampen your face and apply your preferred cleanser.
- Wet the LUNA 4 device.
- Press the universal button once to turn on the device.
- Choose between Regular, Gentle, or Deep Cleansing mode by pressing the corresponding buttons.
- Gently glide the device in circular motions over your face and neck for 1 minute. The device will pause to indicate when to move to a new area.
- Press the universal button once to turn off the device.
- Rinse your face and gently pat dry.

Image: A woman demonstrating the use of the LUNA 4 device for facial cleansing.

Image: Visual representation of the Gentle, Regular, and Deep cleansing modes available on the LUNA 4 device, with adjustable duration and intensities.
4.2 Firming Massage Mode
- Apply a thin layer of FOREO Serum to clean, dry skin.
- Press the universal button once to turn on the device.
- Double press the universal button to activate the Firming Massage mode.
- Choose between Regular, Gentle, or Deep Massage.
- Gently glide the back of the device in straight lines, moving upwards across your face and neck.
- Access guided Firming Massage treatments on the FOREO app for personalized routines.
- Press the universal button once to turn off the device.
Video: Official guide on how to use the FOREO LUNA 4 for both cleansing and firming massage routines.
Video: Demonstration of the FOREO LUNA 4 double cleansing routine, showing application of cleanser and device usage.
5. Maintenance
- After each use, rinse the device with soap and water.
- Leave the device to air dry.
- Ensure the charging port is clean and dry before charging.
5.1 Charging
The LUNA 4 uses a USB charger. Connect the charger to the device's charging port and a power source. A full charge can provide up to 600 uses.
6. Safety Information
- If you have a skin condition or any medical concerns, please consult a dermatologist before use.
- FOREO treatments should be comfortable. If you experience discomfort, discontinue use and consult your physician.
- For reasons of hygiene, do not share your device with anyone else.
- Avoid leaving your device in direct sunlight and never expose it to extreme heat or boiling water.
- Discontinue use if this product appears damaged in any way.
- Use this device for its intended purpose only.
- Before use, thoroughly read the full Product Manual for your device.
7. Troubleshooting
7.1 Device Not Activating
- Battery is empty: Recharge using the USB charging cable for up to 2 hours until fully charged. Then restart your device by holding down the power button.
- Microprocessor malfunction: If the device cannot be switched off and/or interface buttons do not respond, press and hold the power button to restart the device.
7.2 Device Not Syncing to FOREO App
- Ensure that your device is fully charged and that your Bluetooth is turned on.
- Switch your Bluetooth off and then on again to try reconnecting.
- Close the FOREO app and then reopen it to start the process over.
- Delete and reinstall the application; perhaps the application simply needs to be updated.
- After deleting and reinstalling the application, make sure to restart your phone.
- Delete your phone's cookies and cache memory.
- Ensure that your mobile's operating system has been updated to the latest version.
8. Specifications
| Brand | FOREO |
| Model Name | LUNA 4 |
| Item Model Number | 2604403 |
| Color | Combination Skin |
| Material | Silicone |
| Power Source | Battery Powered (1 Lithium Polymer battery included) |
| Product Dimensions | 1.77 x 4.96 x 7.2 inches; 4.44 ounces |
9. Warranty and Support
For warranty information and customer support, please refer to the official FOREO website or the contact information provided in your Basic Manual. Ensure your device is registered via the FOREO For You app to activate any applicable warranty.





