What are the four LED colors used in treatments?

The four LED colors used in treatments are commonly recognized as red, yellow, blue, and green. Each of these colors serves a specific purpose based on their wavelength and the effects they have on the skin.

Red light is often utilized for its healing properties and ability to stimulate collagen production, making it beneficial for reducing the appearance of fine lines and wrinkles. Yellow light can enhance circulation and improve skin hydration, contributing to a more vibrant complexion. Blue light is known for its antibacterial properties, making it effective in treating acne by targeting acne-causing bacteria. Green light is used to help reduce pigmentation and even out skin tone, addressing issues such as sun damage or hyperpigmentation.

The other choices include colors that do not typically correspond to established treatment protocols in LED therapy. While some colors may have niche uses, they are not a standard part of the common color spectrum employed in skin treatments. Thus, the answer identifies the correct and widely accepted LED colors used in aesthetic and therapeutic applications.