A Brief History of Lasers in Facial Esthetics
Lasers have been used in facial esthetics since the 1960s. Early clinical use was limited mostly to ablative procedures, but over the past several decades, broader use has developed alongside advances in laser technology. Today, well over 100 commercially available lasers exist on the market, used for purposes including scar appearance, pigmented lesions, vascular lesions, hair removal, and facial resurfacing.
Facial esthetics has grown from a niche, largely experimental area into a widely offered category of cosmetic treatment. While lasers were once used mainly in limited clinical contexts, they are now more commonly used in cosmetic procedures aimed at addressing facial appearance, texture, and tone.
As laser technology has expanded, many device types have come to market, each with its own protocols, wavelengths, and recommended uses. This wide range of options can make it difficult for patients to understand the differences between devices and what each is generally used for, which is part of why a consultation with a provider matters before choosing a treatment path.
How Laser Light Works
The term “laser” is an acronym for “light amplification by stimulated emission of radiation.” Unlike ordinary sunlight or incandescent light, which scatters in many directions across a broad range of wavelengths, laser light has a few distinct properties:
- Coherent: the light waves move in the same phase, in time and space.
- Monochromatic: the light is a single, pure wavelength, or one color.
- Collimated: the light travels in a narrow, focused, parallel beam rather than spreading out.
- High intensity: because it is monochromatic, it can interact strongly with certain materials and minimally with others.
Because laser light is highly collimated, it can be directed with precision, which is part of why lasers are used across many fields, including facial esthetics, where controlled, targeted application matters.
How Laser Light Interacts With Skin
When a laser is applied to the skin, the effect depends on the wavelength, pulse duration, and the size, type, and depth of the target. Devices used in facial esthetics are generally grouped by how they interact with tissue:
- Photothermal effect: the laser’s energy is absorbed by tissue and converted to heat at the treatment area, a mechanism used by some laser types.
- Photomechanical effect: a rapid pressure wave affects the target tissue, a mechanism used by some Q-switched lasers.
- Photoablation: high-energy light breaks down molecular bonds directly, a mechanism associated with excimer lasers.
The most common targets for facial esthetics lasers are natural pigment in the skin, external pigment such as ink or debris, and other components in the skin’s upper layers. Natural and external pigments are sometimes called chromophores, a term for a group of atoms that gives color to a substance and absorbs light of a specific wavelength.
The specific effect and appropriate laser type depend on the treatment goal, which is part of why a personalized consultation matters before starting any laser-based facial esthetics treatment.
LED-Based Light Technology
LED (Light Emitting Diode) devices are sometimes used alongside laser-based treatments. Unlike lasers, LEDs do not produce a stimulated, amplified beam of light, and the technology and its typical uses differ from laser devices. A provider can explain the difference between laser and LED-based options if either is part of a recommended treatment plan.
Talk to a Provider About Laser Options
Because laser and light-based technology varies so widely by device, wavelength, and intended use, a consultation with a physician-directed provider is the appropriate way to determine which option, if any, may fit your goals. Schedule a consultation with CARE Esthetics to learn more. Individual results vary.
