Composition, use, and preservation method
AssigneeL'oreal
InventorsMaria Dalko, Geraldine Lerebour, Sylvie Cupferman
Life of this patent
Estimating the term…
Abstract
The invention relates to a cosmetic, pharmaceutical, dermatological, nutraceutical or oral cosmetic composition having, as main preserving system, a mild preserving system formed from compounds with a broad antimicrobial spectrum, which have only one pKa, the said pKa being greater than or equal to 10, the said mild preserving system being present in a content strictly greater than or equal to 1% by weight relative to the weight of the said composition. The invention also relates to the use, in a cosmetic, dermatological or pharmaceutical composition, of at least one compound of formula (I), as a preserving agent:
Claims20
Cosmetic, pharmaceutical, dermatological, nutraceutical or oral cosmetic composition having, as main preserving system, a mild preserving system, wherein it is formed from a comTraitement canitie avec Shou Wu +anti-chute (ER4017)pound with a broad antimicrobial spectrum, which has only one pKa, the said pKa being greater than or equal to 10, or a mixture of such compounds, the said mild preserving system being present in a content strictly greater than 1% and strictly less than 3% by weight relative to the weight of the said composition.
Use of at least one compound of formula (Ia) as a preserving agent, especially in a cosmetic, dermatological, pharmaceutical, nutraceutical or oral cosmetic com-position:
- in which:
- either R2 represents a hydrogen atom and R3 represents methyl or ethyl,
- or R2 represents a methyl or ethyl radical and R3 represents a linear C1-C12 alkyl radical (saturated), optionally substituted with a hydroxyl group;
- or a linear C2-C12 alkenyl radical (C═C unsaturated), optionally substituted with a hydroxyl group.
Process for preserving a cosmetic, pharmaceutical, dermatological, nutraceuti-cal or oral cosmetic composition, wherein it consists in incorporating into the said composition, as main preserving system, a mild preserving system formed from a compound with a broad antimicrobial spectrum, which has only one pKa, the said pKa being greater than or equal to 10, or a mixture of such corn-pounds, the said mild preserving system being present in a content strictly greater than or equal to 1% by weight and strictly less than 3% by weight relative to the weight of the said composition.
Compound of formula (Ib):
- in which:
- R2 represents methyl or ethyl, and
- R3 represents a linear C1-C12 alkyl radical (saturated), optionally substituted with a hydroxyl group;
- or a linear C2-C12 alkenyl radical (C═C unsaturated), op-tionally substituted with a hydroxyl group;
- with the exclusion of the compound in which R2=R3=methyl.
Composition according claim, in which the mild pre-serving system is present in the composition in a content of between 1.01% and 2.9% by weight, or even between 1.05% and 2.8% by weight, better still between 1.1% and 2% by weight and preferentially between 1.15% and 1.95% by weight relative to the weight of the said composition.
Dependencies are inferred from the claim text.