Loading... Please wait...Note: Please Test Small Quantities Before Investing in a Large Purchase. No Dimmable CFL Product Performs Like Traditional Incandescent or Halogen Bulbs. Dimmable CFL Bulbs May Not Work Well With Your Dimmer Switch and Even Those That Are Compatible Produce Noticeable Dimming Only Between 20-50% of Total Output. Traditional Bulbs Typically Dim from 0-100%, Dimmable CFL's Do Not.