Drug – bio-affecting and body treating compositions – Live hair or scalp treating compositions – Shaving preparation
Reexamination Certificate
2000-06-05
2002-04-02
Spear, James M. (Department: 1615)
Drug, bio-affecting and body treating compositions
Live hair or scalp treating compositions
Shaving preparation
C424S450000
Reexamination Certificate
active
06365145
ABSTRACT:
BACKGROUND OF THE INVENTION
Currently, the most common methods for hair removal involve the use of hair removal creams, as well as shaving, waxing and electrolysis. Although creams and shaving are popular because they can be readily used at home, they are inadequate because they must be used on a regular basis. Waxing and electrolysis offer longer term hair removal. Both methods, however, can be time-consuming and are often quite painful. For example, removing a typical mustache which contains 1,000 to 2,000 hairs by electrolysis may take up to 50 visits before the hair removal is complete.
More recently, lasers alone or in conjunction with topical formulations containing carbon particles, hair dyes, hematoporphin derivatives or aminolevulinic acid have been used for hair removal (See, U.S. Pat. Nos. 5,226,907 and 5,425,728; Grossman, M. et al.
Lasers Surg. Med. Suppl
. 7:44 (1995)). Such treatments are generally not selective in that they result in only partial destruction of hair follicles and may promote skin reaction.
Accordingly, there exists a need for selectively removing hair that is not time consuming, painful and damaging to the skin, and results in hair removal which is long lasting, and more permanent than conventional hair removal methods. The present invention satisfies this need.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention to provide a method for removing hair that requires little time, is relatively painless and does not damage or irritate the skin.
It also is an object of the present invention to provide a method for removing hair that is long lasting, and more permanent than conventional hair removal methods.
It is a further object of the present invention to provide a liposome composition useful for removing hair.
Additional objects of the present invention will be apparent from the description which follows.
REFERENCES:
patent: 5362748 (1994-11-01), Schwen et al.
patent: 5425728 (1995-06-01), Tankovich
patent: 5707608 (1998-01-01), Liu
patent: 5709994 (1998-01-01), Pease et al.
patent: 6165441 (2000-12-01), Franceschini et al.
Ben-Hur Ehud
Chan Wai-Shun
Zuk Maria M.
Amster Rothstein & Ebenstein
New York Blood Center Inc.
Spear James M.
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