Cosmetic Composition Mattifying Fillers Silane
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Solution Overview
Problem
Cosmetic compositions that provide mattifying and absorbent effects while maintaining skin comfort and softness are lacking, as existing solutions often result in a dry, rough feel and are costly due to the need for high silicone elastomer content.
Innovation Solution
A cosmetic composition combining mattifying fillers with a specific silane, such as octyltriethoxysilane, which provides a comfortable, soft, and easy-to-spread application with mattifying and soft-focus properties, using an aqueous phase with the silane and fillers in a range of 2% to 20% by weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If soft-focus mineral or organic fillers are used to achieve mattifying and optical smoothing effects, then skin imperfections are hidden and skin appears matte, but the skin feels dry and rough
Solution Approach 1:
The patent combines mattifying fillers (such as silica, talc, or clay particles) with silicone elastomers in a single cosmetic composition. This merging allows the composition to achieve both the optical smoothing and mattifying effects of fillers and the soft, comfortable feel of silicone elastomers, thereby resolving the contradiction between achieving matte appearance and maintaining skin comfort.
Solution Approach 2:
The invention uses a composite material system comprising both inorganic/organic mattifying fillers and organic silicone elastomers. This composite approach integrates the beneficial properties of both material types: the fillers provide optical effects while the silicone elastomer provides softness and comfort, eliminating the dry and rough feel associated with filler-only formulations.
2Ease of operation
If silicone elastomers are used at high content to achieve mattifying effect, then soft feel on skin is obtained, but formulation cost increases and texture choice is restricted
Solution Approach 1:
The patent optimizes the concentration parameters of silicone elastomers in the composition, using them at relatively low content levels (typically 1-20% by weight) rather than high content. By carefully controlling this parameter and combining with fillers, the formulation achieves soft feel and mattifying effects without requiring excessive silicone, thereby reducing cost and expanding formulation flexibility.
Solution Approach 2:
Mattifying fillers act as intermediary substances that work synergistically with silicone elastomers. The fillers enhance the mattifying effect and allow the silicone content to be reduced, as the fillers contribute to the overall cosmetic performance. This intermediary role of fillers enables achieving desired effects with lower silicone concentrations.
3Ease of operation
If high silicone elastomer content is used to achieve mattifying effect, then soft feel is obtained, but formulation cost increases
Solution Approach 1:
The invention changes the concentration parameter of silicone elastomers from high to low levels, optimizing the balance between performance and cost. By using silicone at reduced concentrations (1-20% by weight) and compensating with filler particles, the formulation achieves the desired soft feel and mattifying effects at lower material cost, making the product more economically viable.
Solution Approach 2:
The patent employs cost-effective mattifying fillers (such as silica, talc, or clay) as alternative or complementary materials to expensive silicone elastomers. These fillers provide significant mattifying and optical smoothing benefits at lower cost, allowing the formulation to reduce reliance on expensive silicone while maintaining acceptable performance levels.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The composition achieves a comfortable and silky skin feel, easy application, and effective mattifying and soft-focus effects, reducing the need for high silicone content and associated costs.
Implementation Method 1
at least one silane corresponding to formula (I) below and/or oligomers thereof: R1Si(OR2)z(R3)x(OH)y
Implementation Method 2
The silane(s) of formula (I) and/or oligomers thereof are present in an active material content ranging from 2% to 20% by weight relative to the total weight of the composition
Implementation Method 3
soft-focus mineral or organic fillers that absorb sebum and perspiration, in order to make the skin matt and/or to optically smooth out the microrelief and hide skin imperfections
Implementation Method 4
soft-focus mineral or organic fillers that absorb sebum and perspiration
Data Source
AI summary
The present invention relates to a composition comprising an aqueous phase, at least one mattifying filler and at least one silane corresponding to formula (I) below and/or oligomers thereof: R1Si(OR2)z(R3)x(OH)y(I) in which: •Ri is a linear or branched, saturated or unsaturated C1-C22 hydrocarbon-based chain, which may be substituted with an amine group NH2 or NHR (R=C1-C20 and especially C1-C6 alkyl, C3-C40 cycloalkyl or C6-C30 aromatic); or with a hydroxyl group, a thiol group, an aryl group (more particularly benzyl), which is substituted or unsubstituted; Ri possibly being interrupted with a heteroatom (O, S or NH) or a carbonyl group (CO), •R2 and R3, which may be identical or different, represent a linear or branched alkyl group comprising from 1 to 6 carbon atoms, •y denotes an integer ranging from 0 to 3, and •z denotes an integer ranging from 0 to 3, and •x denotes an integer ranging from 0 to 2, •with z+x+y=3, The invention also relates to a cosmetic process for making up and/or caring for keratin materials comprising a step of applying a composition according to one of the preceding claims to the said materials.