There are a few troubleshooting steps you can take to remedy this:1. Select another bulb of the same type (one that is dimming properly elsewhere), then test it in the same socket/light fixture. This should verify whether there are any loose wires in your fixture or if the dimmer itself is not working properly.2. If you are experiencing a buzzing or flickering light, this indicates that the dimmer is not compatible with the light bulb. We highly recommend using an ELV (electronic low voltage) LED dimmer from our list of compatible dimmers in the Manuals & Documentation page.3. If your product is under warranty, and is not resolved by steps 1 and 2, please contact our Customer Service Specialists at 844-334-9938 or email support@suncolighting.com. It helps to provide a photo of the product or a video. That way we can quickly help you verify the issue and how we can resolve it.