Lasting or remaining without essential change, Continuing in the same state, or without any change that destroys form or character; remaining unaltered or unremoved; abiding; durable; fixed; stable; lasting, Without end, eternal, noun_ A chemical hair treatment imparting or removing curliness, whose effects typically last for a period of weeks; a perm, a series of waves in the hair made by applying heat and chemicals, Any of several long-lasting hair styles usually achieved by chemical applications that straighten, curl, or wave the hair