USE OF NATURAL MATERIALS TO IMPROVE DRY SHAVING
Publication Date: 2014-Jul-25
The IP.com Prior Art Database
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Title: Use of natural materials to improve dry shaving
Natural and synthetic compositions are known for improving dry mechanical shaving. Known compositions for this purpose are boron nitride and talcum. These compositions reduce the friction between the shaving device and the skin and thereby improve the user experience and the performance of the shaving device. Compositions that are applied onto the skin, like boron nitride particles, have the disadvantage that they may remain visible on the skin after shaving.
Alternatively, to reduce skin friction, the skin contact surfaces of dry shavers are provided with a friction-reducing coating. These coatings generally have the disadvantage that hairs can glide away from the cutting units of the shaver, so that the chances of catching and cutting the hairs are reduced.
The above disadvantages can be prevented by using micronized flakes (instead of spherical particles) of natural materials like oat, wheat, barley, pee's granulate and other legumes and cereals. These solid particles improve the gliding properties of the shaver over the skin as well. An added benefit is that these natural materials have an index of refraction similar to that of the skin and a lower absorption coefficient than inorganic friction reducing compositions like boron nitride, as a result of which the visibility of these natural materials on the skin is reduced. Furthermore, the flake morphology of these micronized natural materials provides the advantage of a reduced attachment of the material to hairs and an increased attachment to skin.
The proposed natural materials can be relatively easily processed into the desired flake structure, because these materials are generally made of fibers instead of crystals, like inorganic materials. The f...