Process for inhibiting activity reducing size & destroying growth of sebaceous gland

• US 20030129154A1
• Filed: 02/15/2001
• Published: 07/10/2003
• Est. Priority Date: 11/30/1998
• Status: Abandoned Application

• Current Assignee: Light BioScience LLC
• Original Assignee: Light BioScience LLC
• Inventors: McDaniel, David
• Application Number:
  US09/819,082
• Publication Number:
  US 20030129154A1
• Time in Patent Office: Days
• US Class Current: 424/70.1
• CPC Class Codes: A61B 18/203 applying laser energy to the outside of the body
• CPC Class Codes: A61B 2017/00765 Decreasing the barrier function of skin tissue by radiated energy, e.g. using ultrasound, using laser for skin perforation
• CPC Class Codes: A61B 2017/22085 light-absorbing A61B2017/22087 takes precedence
• CPC Class Codes: A61B 2018/00452 Skin
• CPC Class Codes: A61B 2018/00476 Hair follicles
• CPC Class Codes: A61B 2018/1807 using light other than laser radiation
• CPC Class Codes: A61N 2005/0652 Arrays of diodes
• CPC Class Codes: A61N 5/0617 Hair treatment
• CPC Class Codes: A61N 5/062 Photodynamic therapy, i.e. excitation of an agent

Abstract

A system for producing preferential damage to hair exiting mammalian skin. A agent having an average diameter for enabling the agent to penetrate the hair duct is selected. The agent is designed to attach to, or become physically incorporated into, the hair shaft, the hair follicle, the hair bulb or the hair duct. The agent has an electromagnetic radiation absorption characteristic which enables the agent to absorb a first wavelength of electromagnetic radiation from a skin-penetrating electromagnetic radiation source, such as a laser. The agent is applied to the skin so that the agent penetrates the skin and attaches to or becomes physically incorporated into the hair shaft, the hair follicle, the hair bulb or the hair duct. The agent is exposed to the first wavelength of electromagnetic radiation and absorbs the first wavelength of electromagnetic radiation.

Claims

1. A process for producing preferential damage to hair exiting mammalian skin through a hair duct, the hair growing in a hair follicle and having a hair shaft and a hair bulb, the process comprising:

selecting an agent having an average diameter for enabling the agent to penetrate the hair duct, the agent comprising a material for at least one of attaching to and becoming physically incorporated into at least one of the hair shaft, the hair follicle, the hair bulb and the hair duct, the agent having an electromagnetic radiation absorption characteristic for enabling the agent to absorb at least a first wavelength of electromagnetic radiation from a skin-penetrating electromagnetic radiation source,

applying the agent to the skin so that the agent penetrates the skin and at least one of attaches to and becomes physically incorporated into at least one of the hair shaft, the hair follicle, the hair bulb and the hair duct, and

exposing the agent to at least a first wavelength of electromagnetic radiation, whereby the agent absorbs the first wavelength of electromagnetic radiation.

2. The process of claim 1, wherein the agent has an average diameter of about one micron.

3. The process of claim 1, comprising the step of encapsulating the agent in a microencapsulation vehicle.

4. The process of claim 3, wherein the microencapsulation vehicle has an average diameter of about five microns.

5. The process of claim 1, comprising the step of exposing the skin to at least one enzyme.

6. The process of claim 1, comprising the step of exposing the skin to ultrasound.