A faucet handle that gets progressively harder to turn is usually mineral buildup inside the valve body or a cartridge that needs lubrication or replacement. Hard water deposits calcium and lime on the moving parts over time. The handle goes from smooth to stiff to nearly immovable. Forcing it risks breaking the handle, stripping the stem, or cracking the faucet body. The fix is usually cleaning and lubricating the cartridge or replacing it entirely. Both are under $25 and take 15-45 minutes.