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Compositions with Beneficial Properties for Customers

IP.com Disclosure Number: IPCOM000250444D
Publication Date: 2017-Jul-17

Publishing Venue

The IP.com Prior Art Database

Abstract

Described are O/W emulsions for pharmaceutical use, personal care and/or cosmetic use which present the ability to transform into an oil during their application on the skin with a release of the hydrophobic dispersed phase. This innovative type of texture is called Cream-to-Oil technology. These compositions comprise besides other ingredients: - An EO-free emulsifier system - A hydrophobic dispersed phase (5 – 90% and particularly 30-50%), - At least, a hydrophilic polymer acting as a thickener and/or as stabilizer and/or as an agent to adjust and/or modify rheology and/or viscosity and/or sensorial properties of the said compositions. This polymer could be synthetic or natural, a homopolymer or a copolymer and/or linear or branched and/or cross-linked or not. The described cosmetic or pharmaceutical compositions/preparations may contain one or more compounds as described in here.

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Compositions with Beneficial Properties for Customers

Described are O/W emulsions for pharmaceutical use, personal care and/or cosmetic use which

present the ability to transform into an oil during their application on the skin with a release of

the hydrophobic dispersed phase. This innovative type of texture is called Cream-to-Oil-

technology.

These compositions comprise besides other ingredients:

- An EO-free emulsifier system

- A hydrophobic dispersed phase (5 – 90% and particularly 30-50%),

- At least, a hydrophilic polymer acting as a thickener and/or as stabilizer and/or as an agent to

adjust and/or modify rheology and/or viscosity and/or sensorial properties of the said

compositions. This polymer could be synthetic or natural, a homopolymer or a copolymer

and/or linear or branched and/or cross-linked or not.

The described cosmetic or pharmaceutical compositions/preparations may contain one or more

compounds as described below.

Emulsifiers

As emulsifier systems, we intend any structural elements used primary to stabilize the

cosmetic or pharmaceutical preparation by reducing the interfacial tension between the oil and

the water. Such category of ingredients could provide additional characteristic such as easy

spreadability on skin, water resistance of the formulation, film-forming effect on skin, dispersing

effect on solid particles. All those properties contribute to improve/optimize the overall SPF

values of the cosmetic or pharmaceutical preparations.

Specifically, the emulsifier or emulsifier system is anionic or non-ionic and free of EO-units.

Examples include

• Disodium Cetearyl Sulfosuccinate (Eumulgin® Prisma)

• Lauryl Glucoside (and) Polyglyceryl-2 Dipolyhydroxystearate (and) Glycerin

(Eumulgin® VL75)

• Sodium Stearoyl Glutamate (Eumulgin SG)

• Sodium Cetearyl Sulfate (Lanette® E)

• Sucrose Polystearate (and) Hydrogenated Polyisobutene (Emulgade® Sucro)

• Sucrose Polystearate (and) Cetyl Palmitate (Emulgade® Sucro Plus)

• Polyglyceryl-3 stearate (Cremophor® GS 32)

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• Stearic acid (and) Palmitic Acid (Cutina® GS 32)

These emulsifiers may be used alone or in combination.

Emollients

As emollients, we intend any oil phase ingredients that provide emolliency on skin. Usually, they

exert a positive influence on the overall skin sensory properties of cosmetic or pharmaceutical

preparation. They provide softness and well-being on the skin.

Emollients may also act as solvents for UV absorbers and as dispersants for

sunscreens/pigments. The spreading ability is an important and objective criterion to distribute

uniformly and homogeneously the UV filters on skin for an optimized UV protection.

Solvent property is expressed, for example, via its ability to keep dissolved crystalline UV

absorbers inside the oil phase. Dispersing effect is expressed via the ability to prevent

agglomeration of the particulate UV filters and undesirable whitening effect on skin.

The efficiency of the overall UV protection will be significantly increased whe...