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Reference.org
Lye
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<p>Lye is the common name of various <a href="/facts/Alkaline/s6NqPGSP">alkaline</a> solutions, including soda lye (a solution of <a href="/facts/Sodium_hydroxide/xjtdYtq7">sodium hydroxide</a>) and potash lye (a solution of <a href="/facts/Potassium_hydroxide/NBhPBuXc">potassium hydroxide</a>). Lyes are used as cleaning products, as ingredients in soapmaking, and in various other contexts. </p>