Abstract: A method for treating skin tissues, the skin tissues defining an epidermal layer and a sub-epidermal layer, the epidermal layer defining a skin surface and the sub-epidermal layer extending from the epidermal layer substantially opposite to the skin surface, the method comprising: positioning a radiation source outside of the skin tissues at a predetermined distance from the skin surface; powering the radiation source so as to produce infrared radiation having a predetermined spectrum and a predetermined power; and irradiating the sub-epidermal layer with the infrared radiation through the epidermal layer, the predetermined spectrum and the predetermined power being such that the infrared radiation is absorbed to a larger degree in the sub-epidermal layer than in the epidermal layer.

Abstract: A method for protecting mammalian skin against photodamage caused by an exposure to a damaging radiation. The method includes irradiating the mammalian skin before the exposure to the damaging radiation with a protective radiation, the protective radiation including radiation having a wavelength larger than the wavelength of the damaging radiation, the protective radiation being irradiated onto the mammalian skin under conditions suitable for reducing photodamage to the mammalian skin caused by the damaging radiation.

Abstract: A method and device for causing a predetermined physiological change in a mammalian tissue. The method includes irradiating the tissue with a radiation having a power density in the tissue substantially larger than an activation threshold power density, the tissue being irradiated under conditions suitable to cause the predetermined physiological change. The device can emit raditation and forms to the anatomy of a patient. The device can both cool the patient and treatment head using one cooling system.

Abstract: A method and device for causing a predetermined physiological change in a mammalian tissue. The method includes irradiating the tissue with a radiation having a power density in the tissue substantially larger than an activation threshold power density, the tissue being irradiated under conditions suitable to cause the predetermined physiological change. The device can emit radiation and forms to the anatomy of a patient. The device can both cool the patient and treatment head using one cooling system.

Abstract: A photoactivation device for modulating the physiology of a target biological activity by directing a photoactivating beam of light having a predetermined set of photoactivating light parameters on a target surface, the device comprising: a photoactivating light source for emitting the photoactivating beam of light; a positioning means operatively coupled to the photoactivating light source for allowing selective positioning of the photoactivating light source relative to the target surface; a position evaluating means for evaluating the position of the photoactivating light source relative to the target surface.

Abstract: A method for treating skin tissues, the skin tissues defining an epidermal layer and a sub-epidermal layer, the epidermal layer defining a skin surface and the sub-epidermal layer extending from the epidermal layer substantially opposite to the skin surface, the method comprising: positioning a radiation source outside of the skin tissues at a predetermined distance from the skin surface; powering the radiation source so as to produce infrared radiation having a predetermined spectrum and a predetermined power; and irradiating the sub-epidermal layer with the infrared radiation through the epidermal layer, the predetermined spectrum and the predetermined power being such that the infrared radiation is absorbed to a larger degree in the sub-epidermal layer than in the epidermal layer.

Abstract: A photoactivation device for modulating the physiology of a target biological activity by directing a photoactivating beam of light having a predetermined set of photoactivating light parameters on a target surface, the device comprising: a photoactivating light source for emitting the photoactivating beam of light; a positioning means operatively coupled to the photoactivating light source for allowing selective positioning of the photoactivating light source relative to the target surface; a position evaluating means for evaluating the position of the photoactivating light source relative to the target surface.

Abstract: A method of treating mammalian skin tissues for causing a predetermined physiological change in the mammalian skin tissues. A treatment composition of matter is applied onto the mammalian skin. The mammalian skin is irradiated with a first pulse having a power density above an activation threshold power density and with a second pulse. The first pulse is emitted for a duration of from about 1 fem-tosecond to about 1 hour, and the first pulse is separated from the second pulse by an inter-pulse interval of from about 1 microsecond to about 10 seconds. The treatment composition of matter includes a photoreactive substance and is applied in an amount sufficient to cause physiological changes within the mammalian skin tissue upon the mammalian skin tissue being irradiated.

Abstract: A method for protecting mammalian skin against photodamage caused by an exposure to a damaging radiation. The method includes irradiating the mammalian skin before the exposure to the damaging radiation with a protective radiation, the protective radiation including radiation having a wavelength larger than the wavelength of the damaging radiation, the protective radiation being irradiated onto the mammalian skin under conditions suitable for reducing photodamage to the mammalian skin caused by the damaging radiation.

Abstract: A method and device for causing a predetermined physiological change in a mammalian tissue. The method includes irradiating the tissue with a radiation having a power density in the tissue substantially larger than an activation threshold power density, the tissue being irradiated under conditions suitable to cause the predetermined physiological change. The device can emit radiation and forms to the anatomy of a patient. The device can both cool the patient and treatment head using one cooling system.