Not long - ours stopped after 7 months of use - and didn't use it intensively. I wish I had bought a table lamp that uses these hard to find bulbs to start with - wasn't aware at the time. So the first recommendation is not to buy a lamp that uses these bulbs. Second recommendation - try to find a lightbulb that lasts longer, then come back here and let us know which one works!
SleekLighting GU24 23W 2 Prong Bulbs - UL Approved 120v 60Hz - Twist Lock CFL Fluorescent - 4200K Cool White 4 Pack
8 Review
💡 (4 Pack) 13 Watt Mini Spiral GU24 Base CFL Light Bulb - Energy Efficient - Warm White (2700K) - 60W Equivalent - T2 Mini-Twist
3 Review
💡 Philips LED 417089 Energy Saver Compact Fluorescent T2 Twister (A21 Replacement) Household Light Bulb: 2700K, 18W (75W Eq.), E26 Base, Soft Warm White, Pack of 4
4 Review
SleekLighting 23W T2 RED Light Spiral CFL Bulb, 120V, E26 Medium Base - Energy Saver (Pack of 2)
8 Review
Philips Alto PL-C Energy Saving Compact Fluorescent 💡 Light Bulb: 1800-Lumen, 3500-Kelvin, 26-Watt, 4-Pin G24-3 Base, Daylight
6 Review
💡 Feit Value Pack 13w=60w Soft White CFL EcoBulbs - Save Energy with this Convenient 1 Box Bundle
5 Review
💡 Philips 230425 Energy Saver Compact Fluorescent Non-Integrated 26W PL-C Soft White 4-Pin Base Bulb - Discover Efficient Lighting Solutions
5 Review
TCP CFL Double Circle Lamp, 200W Equivalent, Bright White (3500K) T6 Circline Bulb
8 Review