Dedifferentiated plant cells of the genus paeonia, extracts thereof and cosmetic uses thereof
AssigneeL'oreal
InventorsCatherine BESOMBES, Cosima DUFOUR-SCHROIF, Jean-Jacques SCHOONJANS
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Abstract
The present invention relates to dedifferentiated plant cells of a plant of the genus Paeonia, or extracts thereof, obtained from at least one plant part chosen from buds, petals, leaves, and mixtures thereof, and also to the process for obtaining said cells, to the cosmetic composition comprising them, to uses thereof and to cosmetic treatment methods comprising the application of said composition to the skin to improve and/or reinforce the barrier function, improve the moisturization of the skin, and as antioxidant.
Claims26
Dedifferentiated plant cells of a plant of the genus Paeonia, or extracts thereof, obtained from at least one plant part chosen from the buds, the petals, the leaves, and mixtures thereof.
A composition comprising, in a physiologically acceptable medium, dedifferentiated plant cells of a plant of the genus Paeonia, or extracts thereof, and:
- at least one adjuvant chosen from hydrophilic or lipophilic thickeners or gelling agents, hydrophilic or lipophilic cosmetic active agents, preservatives, antioxidants other than said cells and/or extracts, fragrances, fillers, screening agents, odour absorbers, colourants, salts;
- and/or
- at least on emulsifier;
- and/or
- at least one oily phase.
A non-therapeutic cosmetic treatment method comprising the application to the skin of a cosmetic composition comprising, in a physiologically acceptable medium, dedifferentiated plant cells of a plant of the genus Paeonia, or extracts thereof, to prevent a reduction in and/or reinforce the barrier function of the skin.
A non-therapeutic cosmetic treatment method comprising the application to the skin of a cosmetic composition comprising, in a physiologically acceptable medium, dedifferentiated plant cells of a plant of the genus Paeonia, or extracts thereof, to improve the moisturization of the skin, prevent and/or to treat roughness or microrelief and/or improve the radiance of the complexion and/or to improve the suppleness of the skin.
A non-therapeutic cosmetic treatment method comprising the application to the skin of a cosmetic composition comprising, in a physiologically acceptable medium, dedifferentiated plant cells of a plant of the genus Paeonia, or extracts thereof, to prevent a reduction in and/or reinforce the protection of the skin against external attack.
A non-therapeutic cosmetic treatment method comprising the application to the skin of a cosmetic composition comprising, in a physiologically acceptable medium, dedifferentiated plant cells of a plant of the genus Paeonia, or extracts thereof, to prevent and/or treat the cosmetic signs of skin dryness.
A non-therapeutic cosmetic use of dedifferentiated plant cells of a plant of the genus Paeonia, or of extracts thereof, for preventing a reduction in and/or reinforcing the barrier function of the skin.
A non-therapeutic cosmetic use of dedifferentiated plant cells of a plant of the genus Paeonia, or of extracts thereof, for preventing a reduction in and/or reinforcing the protection of the skin against external attack.
A non-therapeutic cosmetic use of dedifferentiated plant cells of a plant of the genus Paeonia, or of extracts thereof, for improving the moisturization of the skin, preventing and/or treating roughness or microrelief and/or improving the radiance of the complexion and/or for improving the suppleness of the skin.
A non-therapeutic cosmetic use of dedifferentiated plant cells of a plant of the genus Paeonia, or of extracts thereof, for preventing and/or treating the cosmetic signs of skin dryness.
A non-therapeutic cosmetic treatment method comprising the application to the skin of a cosmetic composition comprising, in a physiologically acceptable medium, dedifferentiated plant cells of a plant of the genus Paeonia, or extracts thereof, to prevent and/or treat skin disorders induced by oxidative stress.
A non-therapeutic cosmetic treatment method comprising the application to the skin of a cosmetic composition comprising, in a physiologically acceptable medium, dedifferentiated plant cells of a plant of the genus Paeonia, or extracts thereof, to prevent and/or treat the signs of skin ageing.
A non-therapeutic cosmetic treatment method comprising applying to the skin dedifferentiated plant cells of a plant of the genus Paeonia, or of extracts thereof, to act as an antioxidant.
A non-therapeutic cosmetic treatment method comprising applying to the skin dedifferentiated plant cells of a plant of the genus Paeonia, or of extracts thereof, for preventing and/or treating skin disorders induced by oxidative stress, induced by UV rays and/or pollution.
A non-therapeutic cosmetic treatment method comprising applying to the skin dedifferentiated plant cells of a plant of the genus Paeonia, or of extracts thereof, for preventing and/or treating the signs of skin ageing.
A process for obtaining dedifferentiated plant cells of a plant of the genus Paeonia, or extracts thereof, comprising at least the following steps:
- i. providing one or more parts of a plant, of the genus Paeonia;
- ii. culturing said plant part(s) provided in step i. in a culture medium comprising at least one plant hormone, so as to generate dedifferentiated cells;
- and
- iii. recovering the dedifferentiated cells obtained at the end of step ii.;
- iv. optionally, eliciting the dedifferentiated cells recovered in step iii. using an elicitor chosen from methyl jasmonate, chitosan, a bacterium of the genus Lactobacillus, and cold;
- v. optionally, performing an extraction of the dedifferentiated cells recovered in step iii. or elicited in step iv.
Dependencies are inferred from the claim text.