Abstract: The present invention concerns the use of hydroxyapatite as the physical sunscreening agent in synergistic association with at least one chemical sunscreening agent, in products designed for application to the skin in order to protect the same from solar UV radiation. Particularly, cosmetic compositions are described comprising the sunscreen product having screening capability, high dermal tolerance and a low whitening effect on the skin.

Abstract: The invention relates to biologically active nanoparticles of a carbonate-substituted non-stoichiometric hydroxyapatite, having: a) a crystallinity degree CD lower than 40%, the crystallinity degree being defined as CD=(1?X/Y)·100 wherein: Y=height of the diffraction maximum at 2?=33°, X=height of the diffraction background at 2?=33° of the nanoparticles X-ray diffraction pattern; b) a length L ranging from 20 to 200 nm and a width W ranging from 5 to 30 nm; and c) an aspect ratio AR comprised between 2 and 40, the aspect ratio being defined as AR=L/W. The biologically active nanoparticles of the invention find a preferred use in oral or dental hygiene applications and may be formulated as compositions for oral or dental hygiene such as, for example, solutions, suspensions, oils, gels or other solid products.

Abstract: The present invention concerns the use of hydroxyapatite as the physical sunscreening agent in synergistic association with at least one chemical sunscreening agent, in products designed for application to the skin in order to protect the same from solar UV radiation. Particularly, cosmetic compositions are described comprising the sunscreen product having screening capability, high dermal tolerance and a low whitening effect on the skin.

Abstract: The invention relates to biologically active nanoparticles of a carbonate-substituted non-stoichiometric hydroxyapatite, having: a) a crystallinity degree CD lower than 40%, the crystallinity degree being defined as CD=(1?X/Y)·100 wherein: Y=height of the diffraction maximum at 2?=33°, X=height of the diffraction background at 2?=33° of the nanoparticles X-ray diffraction pattern; b) a length L ranging from 20 to 200 nm and a width W ranging from 5 to 30 nm; and c) an aspect ratio AR comprised between 2 and 40, the aspect ratio being defined as AR=L/W. The biologically active nanoparticles of the invention find a preferred use in oral or dental hygiene applications and may be formulated as compositions for oral or dental hygiene such as, for example, solutions, suspensions, oils, gels or other solid products.

Abstract: The cleansing device for WC pans comprises a transparent, solid bar (10) and a support member (12) having a lower portion (14) for supporting the bar (10) and an upper projection (16) for engaging the edge of the pan to enable the support member (12) to be suspended.