There is provided a system (100) and method for determining a water or lipid level of skin. The system (100) comprises at least two electrodes (108) suitable for contacting skin, and a signal generator (106) configured to generate an electrical signal at a frequency across the at least two electrodes (108). The system (100) is configured to measure a conductivity between the at least two electrodes (108). The system (100) is further configured to determine a water or lipid level of skin based on the measured conductivity and the frequency of the electrical signal.

There is provided a system (100) and method for determining a water or lipid level of skin. The system (100) comprises at least two electrodes (108) suitable for contacting skin, and a signal generator (106) configured to generate an electrical signal at a frequency across the at least two electrodes (108). The system (100) is configured to measure a permittivity between the at least two electrodes (108). The system (100) is further configured to determine a water or lipid level of skin based on the measured permittivity and the frequency of the electrical signal.

The present invention relates to an accessory device (20) for an image-capturing device (10) for capturing a skin image of a subject's skin comprising a tubular member (21) having a first opening (22) at its first end (23) configured to surround a light source (11) and an image sensor (12) included in the image-capturing device (10) and a second opening (24) at its second end (25) configured to surround a skin portion (101) and two mirrors (26, 27) arranged within the tubular number (21) at its second end (25), wherein a first mirror (26) is arranged to retied light (30) emitted by the light source (11) towards the skin portion (101) and a second mirror (27) is arranged to reflect light (31) reflected from the skin portion (101) towards the image sensor (12). The accessory device can be coupled to an image-capturing device to acquire an image of a skin portion, which is evaluated to determine a skin parameter, such as skin gloss.

A method is for determining a beauty ritual. The method includes performing a beauty diagnosis of a user, and determining a generic beauty ritual including a set of recommended products selected according to the beauty diagnosis. Each recommended product is associated with a generic dosage and a generic prescription for use. The method further includes measuring, over time, the external stress undergone by the user with an environment sensor carried by the user during a period of time. At each increment of the period, the generic dosage and/or the generic prescription for use of the generic beauty ritual is modified based on the measured external stress to obtain a beauty ritual with recommended products having a dosage and/or a prescription for use enabling to respond to the external stress undergone by the user.

The invention relates to a system for analysing physico-chemical properties of a skin surface, comprising: at least one contact sensor for applying to said skin surface to be analysed in order to determine specific information, once or twice a day, about a particular area of the skin surface; at least one environment sensor designed to accompany a user throughout the day and to measure, throughout the day, at least one external parameter acting on said skin surface; and a processing unit interfaced with the contact and environment sensors, said unit being fitted with analysis means allowing the determination of physico-chemical properties of the skin surface to be analysed, from signals generated by the contact and environment sensors.

There is provided a system (100) and method for determining a water or lipid level of skin. The system (100) comprises at least two electrodes (108) suitable for contacting skin, and a signal generator (106) configured to generate an electrical signal at a frequency across the at least two electrodes (108). The system (100) is configured to measure a conductivity between the at least two electrodes (108). The system (100) is further configured to determine a water or lipid level of skin based on the measured conductivity and the frequency of the electrical signal.

There is provided a system (100) and method for determining a water or lipid level of skin. The system (100) comprises at least two electrodes (108) suitable for contacting skin, and a signal generator (106) configured to generate an electrical signal at a frequency across the at least two electrodes (108). The system (100) is configured to measure a permittivity between the at least two electrodes (108). The system (100) is further configured to determine a water or lipid level of skin based on the measured permittivity and the frequency of the electrical signal.

The present invention relates to an accessory device (20) for an image-capturing device (10) for capturing a skin image of a subject's skin comprising a tubular member (21) having a first opening (22) at its first end (23) configured to surround a light source (11) and an image sensor (12) included in the image-capturing device (10) and a second opening (24) at its second end (25) configured to surround a skin portion (101) and two mirrors (26, 27) arranged within the tubular number (21) at its second end (25), wherein a first mirror (26) is arranged to retied light (30) emitted by the light source (11) towards the skin portion (101) and a second mirror (27) is arranged to reflect light (31) reflected from the skin portion (101) towards the image sensor (12). The accessory device can be coupled to an image-capturing device to acquire an image of a skin portion, which is evaluated to determine a skin parameter, such as skin gloss.

The invention relates to a system for analysing physico-chemical properties of a skin surface, comprising: at least one contact sensor for applying to said skin surface to be analysed in order to determine specific information, once or twice a day, about a particular area of the skin surface; at least one environment sensor designed to accompany a user throughout the day and to measure, throughout the day, at least one external parameter acting on said skin surface; and a processing unit interfaced with the contact and environment sensors, said unit being fitted with analysis means allowing the determination of physico-chemical properties of the skin surface to be analysed, from signals generated by the contact and environment sensors.

A method is for determining a beauty ritual. The method includes performing a beauty diagnosis of a user, and determining a generic beauty ritual including a set of recommended products selected according to the beauty diagnosis. Each recommended product is associated with a generic dosage and a generic prescription for use. The method further includes measuring, over time, the external stress undergone by the user with an environment sensor carried by the user during a period of time. At each increment of the period, the generic dosage and/or the generic prescription for use of the generic beauty ritual is modified based on the measured external stress to obtain a beauty ritual with recommended products having a dosage and/or a prescription for use enabling to respond to the external stress undergone by the user.