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US 8,025,700 B2Granted
Method and system for optically bleaching keratinous fibers
AssigneeL'oreal
InventorsHenri Samain, Patricia Fridelance
Life of this patent
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Abstract
The present invention relates to a method of treating keratinous fibers, especially hair fibers, comprising at least one step of at least partially bleaching the fibers, in which at least one region to be treated is exposed to at least one light pulse, characterized in that this pulse is generated by a diode-pumped laser or by a regenerative amplifier laser.
Claims42
A method of treating keratinous fibers for at least partially bleaching the keratinous fibers, comprising:
- exposing at least one region being treated to at least one light pulse laser, a duration over which a light power of the pulse reaching the fibers is equal to or greater than one half of a peak power being between about 100 ps and about 1 μs, the pulses occurring at a frequency greater than about 10 kHz.
Dependencies are inferred from the claim text.