Texas Esthetician License Practice Exam

What color LED is used to reduce hyperpigmentation?

1. Purple

2. White

3. Green

4. Orange

The correct answer is: Green

The use of green LED light in esthetics is specifically known for its efficacy in addressing hyperpigmentation. Hyperpigmentation occurs when certain areas of the skin become darker than the surrounding skin, often due to sun exposure, hormonal changes, or post-inflammatory processes. The green LED light works by targeting melanin production, which is responsible for pigmentation, helping to lighten dark spots and even out skin tone. Green light therapy is effective because it penetrates the skin at a depth that allows it to affect the melanocytes (the cells that produce melanin), thus aiding in the reduction of excess pigment. Additionally, green light can have a calming effect on the skin, which is beneficial for overall skin health and can reduce redness associated with skin conditions. Other colors of LED light, while they have their own specific benefits, do not provide the same targeted effects for hyperpigmentation. For instance, purple light is a combination of red and blue and is often used for its rejuvenating properties, while white light usually encompasses all colors and may promote general skin health without targeting hyperpigmentation specifically. Orange light can improve skin glow but is not primarily used for pigmentation issues.