The Lifewave X49 patch is a phototherapy product that claims to stimulate the skin with specific wavelengths of light to lift the peptide AHK-Cu. AHK-Cu, a synthetic peptide derived from GHK-Cu, is supposed to improve cognitive function, muscle growth, fat loss, and bone health. The X49 patches use a similar technology to the X39 patches, but they reflect a different frequency of light, triggering the production of AHK-Cu2. The patches are designed to be worn on specific points on the body and last up to 12 hours.
The frequency of the Lifewave X49 Light Therapy Frequency Patch is also not specified, but is likely related to the frequency of infrared rays reflected by the patch. Infrared is a type of electromagnetic radiation with a wavelength in the range of approximately 700 nm to 1 mm and a corresponding frequency in the range of approximately 430 THz to 300 GHz 5 . However, not all infrared light affects the body equally, and different wavelengths may have different biological responses. A study testing the effects of the Lifewave X49 patch on body composition and performance used an infrared spectrometer to measure the wavelengths of light emitted by the patch. The study found that the peak wavelength of light emitted by the patch is about 850 nm, which corresponds to a frequency of about 353 THz. This wavelength is also in the near-infrared region of the spectrum, which is also used in some medical applications such as photobiomodulation and low-level laser therapy.
Note that this study was sponsored by Lifewave and had a small sample size of only 20 participants. More independent and rigorous research is needed to verify the claims and mechanisms of the Lifewave X49 patch and its effects on AHK-Cu and other health outcomes.