1. Cosmetic or dermatological preparation for application on wet skin
US Patent 9,610,231
Application No 13/606,536
Granted 4 April 2017
Assignee Beiersdorf
Cosmetic products are either washed off after application or are intended to remain on the skin to increase their effectiveness.
Men favour showers and prefer to minimise time spent applying cosmetic products.
The patent describes an aqueous cosmetic or dermatological preparation for application on wet or moist skin, which exhibits a skin care effect and can be applied under the shower.
The composition is substantially free from conventional emulsifiers and comprises at least two different polyacrylic acid polymers, at least two different C14-22 fatty alcohols and at least 13% w/w of microcrystalline wax, preferably in combination with one or more hydrocarbon oils.
However, at least one polyacrylic acid polymer may have emulsifying properties, whereas another one will improve the sensory properties of the composition.
The preferred polymers with emulsifying properties are acrylate crosspolymers (INCI: Acrylates/C10-30 alkyl acrylate crosspolymer) and for sensory properties carbomers are preferred.
The fatty alcohol component varies between 3% and 13% and is a mixture of myristyl, cetyl and stearyl alcohols.
The microcrystalline wax represents up to 45% of the composition and it forms a partially occlusive protective film on the skin, which protects it against drying out. The preferred hydrocarbon oil is mineral oil (INCI: Paraffinum liquidum).
Other optional ingredients to improve aesthetics and stability or to make cosmetic claims may be added.
The applicants claim that the preparation may be applied to wet skin in the shower as a moisturising body lotion. It may also be applied to the wet face prior to shaving.
2. Pre-shave preparation with enhanced lubricity
US Patent 8,173,110
Application No 12/954,388
Granted 8 May 2012
Assignee Combe Incorporated
The patent describes a composition to lubricate skin prior to using an electric razor.
It comprises at least one polyfluoroalkyl dimethicone polymer in a volatile carrier and an agent to suspend it in the volatile component.
It is claimed that the composition dehydrates moisture on the skin or facial hair to reduce friction between the skin’s surface and razor, and improve the feel of the skin.
About 5% perfluorononyl dimethicone is included to impart lubricity and the preferred volatile component is ethanol, comprising at least 70% by weight of the total composition.
The preferred suspending agents are acrylate copolymers and/or acrylatealkyl copolymers, and various possibilities are identified by INCI name, trade name and supplier.
Optionally suitable emollients are included; isodecyl neopentanoate, isodecyl myristate and triethylhexanoate are named and included at a total of 5%.
Other optional ingredients include skin conditioners, humectants, colour, fragrance, antioxidants, chelators, natural extracts, vitamins, UV light absorbers, opacifying agents, solvents and combinations thereof.
3. High lubrication shaving aid
US Patent 9,561,164
Application No 13/882,403
Granted 7 February 2017
Assignee Kulesza, John E
Shaving creams are designed to provide a soothing affect by adding moisture to the shaved area and lubricate the interface between the blades and the skin.
Of the three types of shaving creams, lathering ones are the most common but have a relatively high pH that can produce skin irritation.
Non-lathering shaving creams or gels are simple oil-water emulsions that provide lower pH due to the absence of metal hydroxides, but do not define unshaved areas.
Post-foaming gels produce foam during application to the skin and are typically simple aqueous dispersions and the foaming action is due to vaporisation of aliphatic hydrocarbons during application.
The use of volatile hydrocarbons (VOCs) to promote foaming reduces the lubricity of the final product on the skin and VOCs are preferably avoided for environmental reasons.
The patent describes a shaving aid composition that includes an organic polyhalogenic agent to promote post-application foaming and increase lubricity.
Specifically, the shaving aid is said to provide improved lubrication and reduced irritation from shaving, and does not rely on hydrocarbons for foaming.
Therapeutics are optionally included to reduce sensitivity or treat skin conditions such as acne vulgaris and pseudofolliculitis barbae.
The basic composition comprises about 15% triethanolamine stearate; about 7% methoxynonafluorobutane; about 0.75% polyethylene; about 0.5% lauroyl lysine; and water.
To this may be added vitamin A or its derivatives, hydroxy acids, benzoyl peroxide, antimicrobials, anti-viral agents, non-steroidal anti-inflammatory agents, UV filters, lipids or immunomodulators.
Further possible additives include preservatives, emulsifiers, foam boosters or enhancers, thickeners, solvents, skin conditioning agents, humectants, colour and fragrance.