Our light bulbs are not suitable to be used with dimmer switches or to be dimmed. This is by design, because when LED bulbs are dimmed and are not running at full brightness it significantly increases the amount of flicker from the light, it also creates high EMF levels being emitted from the bulbs. We have designed our light bulbs to be flicker free and low EMF, so to not compromise this we have made them non dimmable.
We do have our flicker free NoBlue Amber Lamp, Twilight Red Light Lamp, and the NoBlue Book Light, which have 3 brightness settings which make a suitable light source to use if you would like to raise and lower the brightness of the light.