Browse Prior Art Database

Suncare compositions with new cosmetic raw materials (2)

IP.com Disclosure Number: IPCOM000198279D
Publication Date: 2010-Aug-02
Document File: 159 page(s) / 2M

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is the use of new cosmetic ingredients in suncare and daily care compositions. (2)

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 6% of the total text.

Page 1 of 159

Suncare compositions with new cosmetic raw materials (2) 1/159

Suncare compositions with new cosmetic raw materials (2)

Cosmetic or pharmaceutical preparations according to the invention may exist in a wide variety of

preparation forms, for example, creams (more or less viscous) such as O/W, W/O, O/W/O, W/O/W,

PIT emulsions or micro-emulsions, gels, lotions, milks, sprays, alcoholic or aqueous/alcoholic lotions,

milks, wax/fat compositions, stick preparations, powders, tablets, foams, ointments, etc…

The described cosmetic or pharmaceutical preparations are distinguished by excellent protection of

human skin against the damaging effect of sunlight.

As water- and oil-containing emulsions (e.g. W/O, O/W, O/W/O and W/O/W emulsions or

microemulsions) the preparations contain, for example, from 0.1 to 30 % by weight, preferably from

0.1 to 15 % by weight and especially from 0.5 to 10 % by weight, based on the total weight of the

composition, of one or more UV absorbers, from 1 to 60 % by weight, especially from 5 to 50 % by

weight and preferably from 10 to 35 % by weight, based on the total weight of the composition, of at

least one oil component, from 0 to 30 % by weight, especially from 1 to 30 % by weight und

preferably from 4 to 20 % by weight, based on the total weight of the composition, of at least one

emulsifier, from 10 to 90 % by weight, especially from 30 to 90 % by weight, based on the total weight

of the composition, of water, and from 0 to 88.9 % by weight, especially from 1 to 50 % by weight, of

further cosmetically acceptable adjuvants.

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

compounds as described below.

Emollients

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

could act as solvents for UV absorbers and as dispersants for sunscreens/pigments. Usually,

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

pharmaceutical preparation. 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 when optimized solubility of

organic UV absorbers and dispersion of particulate UV filters are achieved.

Furthermore, emollients can exhibit some photostabilizing function on UV absorbers and

compensate the fact that some UV absorbers are prone to photodecay. Most of those specific

emollients are solvents with medium to high polarity.

Hereby, specific ingredients are preferably used to fulfill the previous described properties:

Page 2 of 159

Suncare compo...