Does Light Therapy Cause Cancer?

Does Light Therapy Cause Cancer?

LED light therapy has gained popularity in recent years as an effective skincare treatment for various skin concerns, such as acne, wrinkles, and inflammation. However, some people have expressed concerns over whether LED light therapy could cause cancer. In this article, we'll explore the facts, dispel the myths, and help you make an informed decision about this innovative skincare treatment.

Understanding LED Light Therapy

LED (Light Emitting Diode) therapy is a non-invasive skincare treatment that uses varying wavelengths of light to target specific skin issues. Red light, for example, stimulates collagen production and reduces inflammation, while blue light fights acne-causing bacteria. LED light therapy is FDA-cleared and widely used by dermatologists and estheticians due to its proven effectiveness and safety.

Does LED Light Therapy Cause Cancer?

The simple answer is no. LED light therapy does not cause cancer. The confusion arises because LED light therapy is often mistakenly associated with ultraviolet (UV) radiation, which is known to cause skin cancer. LED light therapy does not emit harmful UV rays and is, therefore, safe for regular use.

LED vs. UV Light

It's essential to understand the difference between LED and UV light. While both are types of electromagnetic radiation, they have distinct properties and effects on the skin. LED light is visible and falls within the safe range of the light spectrum. In contrast, UV light is invisible and has a shorter wavelength, which can penetrate the skin and cause DNA damage, leading to skin cancer.

Studies on LED Light Therapy and Cancer

Numerous studies have demonstrated the safety and effectiveness of LED light therapy for various skin conditions. Some studies have even suggested that certain wavelengths of LED light can inhibit cancer cell growth and promote wound healing. For example, NASA has utilized red LED light to promote wound healing in astronauts, and some cancer centers use low-level light therapy (LLLT) to manage side effects of cancer treatments.


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LED light therapy is a safe and effective treatment for various skin concerns, and there is no evidence to suggest that it causes cancer. On the contrary, LED light therapy has been shown to provide numerous benefits for the skin, without the risks associated with UV radiation. As always, it's important to consult with a skincare professional before beginning any new treatment to ensure it's appropriate for your skin type and concerns.