Yes, it is possible to dim non-dimmable lamps with Philips Hue light bulbs. The Philips Hue White & Colour Ambiance GU10 bulbs can be controlled via the Hue app or a compatible dimmer switch12. This means that you can adjust the brightness of the lamps, even if the original lamps are not labelled as dimmable.

It is not only possible but even necessary for the lamp not to have its own integrated dimmer switch. Hue lamps always require the full 230V from the socket in order to function properly. Dimming is then carried out by a control device integrated into the Hue light source, which you then send the command to dim using your smartphone or a special Hue dimmer switch, for example.