Loreal Sa

L'oreal

Béatrice Toumi

Bertrand Lion

Nathalie Martin

Xavier Blin

Florence Tournilhac

Philippe Ilekti

A method of makeup and/or non-therapeutic care for non-fibrous human keratin material, particularly the skin, the mucus membranes thereof, or the nails, including: bringing an outer surface of a piece of solid cosmetic composition, having a temperature-sensitive dynamic rub coefficient, into contact with, or near, a heating device, said dynamic rub coefficient, at 25&#xb0; C., being greater than or equal to 0.5, preferably 0.6, so as to heat said piece in a localized manner with a view to essentially softening only said outer surface and lowering the dynamic rub coefficient thereof; and applying the outer surface of the thus-heated composition onto the area to be treated.

Cosmetic heat treatment method

The present invention relates to novel block polymers comprising at least one first block and at least one second block that are incompatible with each other, have different glass transition temperatures (Tg), and are linked together via an intermediate segment comprising at least one constituent monomer of the at least one first block and at least one constituent monomer of the at least one second block. The block polymer has a polydispersity index I of greater than 2. The invention also relates to cosmetic compositions comprising the block polymers and processes for their use.

Block polymers and cosmetic compositions and processes comprising them

The invention relates to a cosmetic makeup composition and/or care composition for the skin and the lips, comprising a dispersion, in a cosmetically acceptable medium, of particles comprising at least one at least partially external supple phase comprising at least one supple polymer having at least one glass transition temperature of less than or equal to 60&#xb0; C., and an at least partially internal rigid phase which is an amorphous material having a glass transition temperature of greater than 60&#xb0; C., the supple polymer being at least partially attached by chemical grafting onto the rigid phase. The invention also relates to the use of such a particle dispersion to improve the comfort and staying power of cosmetic compositions.

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Verrieres le Buisson, France

Béatrice Toumi