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US 9,872,824 B2Granted
Semi-permanent hair straightening composition and method
AssigneeLubrizol Advanced Materials, Inc.
InventorsMurat Kadir, Mark J. McGuiness
Life of this patent
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Abstract
A composition and a process for straightening hair are disclosed. The process includes coating keratin fibers with a composition comprising a thermally-activated agent and contacting the coated keratin fibers with a heating device at a temperature of at least 185° C. for sufficient time to modify the keratin fibers. The thermally-activated agent comprises a heterocyclic compound containing two heteroatoms selected from nitrogen and oxygen in a 5 or 6-membered ring, such as a cyclic alkylene carbonate.
Claims11
A process for straightening hair comprising;
- coating hair fibers with a composition comprising ethylene carbonate;
- and
- contacting the coated hair fibers with a heating device at a temperature of at least 185° C. for at least 5 passes of continuous movement of said heating device from the root of the hair to the end to modify the hair fibers,
- and wherein said composition is free of cyclic mercapto-group, thiols group and sulfite group containing compounds.
1 more element
Dependencies are inferred from the claim text.