Instant Power Crystal Lye Drain Opener quickly and effectively clears clogged drains. Powerful 100% Lye formula creates heat to melt and dissolve grease, hair, soap, scum, and other drain clogging material. Clears drain lines in 15-30 minutes. For use in kitchen and bathroom sinks, tubs, and showers. Powerful, 100% lye drain opener Cuts through sludge and grease Quick action formula (works in 15-30 minutes) Safe for all pipes and septic systems Dissolves hair, grease, soap scum and more 100% money back guarantee Drain Cleaner