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Patent Picks—Colored Bubbles, Straightening, Suspended Air and More in Hair Care
By: Rachel L. Grabenhofer
Posted: April 6, 2011
page 5 of 5
This patent describes compositions and methods for producing colored bubbles having a single color uniformly dispersed in the film. The composition comprises at least one surfactant mixed with at least one colorant, the colorant forming at least approximately 10% of the composition. The surfactant forms the bubble while the colorant, or pigment, provides the color. Generally, the composition may comprise 10-99% colorant to produce varying degrees of opacity. In addition, glycerin, fragrance, propylene glycol, sodium lauryl sulfate, potassium hydroxide, or other additives may be included. The present invention can also be used in fields such as toys, toothpaste, bath bubbles, shampoo, soaps, creams, lotions, diapers, lenses, paint, inks, adhesives, displays, semiconductors, biomedical, photonics, face masks, hair colors, plastics, and textiles.
Method of chemically modifying the internal region of a hair shaft
WIPO Patent Application WO/2011/031453
Publication date: March 17, 2011
Assignee: The Procter & Gamble Company, Thomas Krause, Birgit Schreiber and Andreas Flohr
This patent describes a method for chemically modifying the internal region of a hair shaft, comprising the steps of: providing and applying to hair a treatment composition comprising from 0.1% to 20% of an ethylenic monomer by weight of the total composition, an initiator and a dermatologically acceptable carrier; and exposing the hair to a relative humidity (RH) of at least 70% within 1 hr of applying the treatment composition for 10 to 90 min. Said method reportedly provides improved performance, efficacy and/or efficiency. Indeed, the application of high RH has numerous benefits with regard to this technology. Without being bound by theory, it is believed that exposing the hair to high RH during the chemical modification of the internal region of a hair shaft improves the diffusion of the monomers through the hair and/or increases the penetration of the monomers into the hair shaft. More specifically, it is believed that components of the treatment compositions are maintained in solution for longer and are more mobile. Furthermore, high RH is thought to result in a swollen hair shaft and a more open cuticle.
According to the inventors, the resultant benefit of the invention is the provision of a base for highly effective, durable and optimized hair styling. In particular, benefits may include improved style-ability, enhanced shape retention, increased volume and thickness, longer lasting hold, environmental humidity resistance, increased shine, reduced frizz, dye wash fastness and style type flexibility (interchangeable between, e.g., curled or straightened hair). Furthermore, the internal structure of the hair shaft is improved and this improvement is retained for longer. The benefits of improved internal structure include greater hair shaft rigidity and strength. Moreover, the surface structure of the hair may benefit; specifically, the cuticles may form a more regular pattern, which results in increased hair shine.