Based on the provided reviews, there are specific ingredients and product types that users have reported may not be compatible or could cause issues when used with the AGE-R Booster Pro. Here are the key points summarized: ### Ingredients and Products to Avoid: 1. **Oil-Based Cosmetics**: - Some users have mentioned that oil-based cosmetics may not be ideal for use with the device.Review+ 2. **Special Gels Required by Other Devices**: - Users with sensitive skin have noted issues with special gels required by other devices, which can cause skin problems.Review+ 3. **Water-Based Products (for certain modes)**: - For effective use without skin irritation, some users suggest avoiding purely water-based products, especially for certain modes like the Microcurrent Mode.Review+ ### Additional Tips: - **Consistency is Key**: Many users emphasize the importance of consistent use to see results.Review+ - **Start with Lower Intensity**: For sensitive skin, it’s recommended to start with lower intensity settings and gradually increase.Review+ ### Related Questions for You:

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