Infra-red rays are considered effective for:

Infra-red rays are primarily considered effective for promoting relaxation. This is due to their ability to penetrate the skin and increase blood circulation, which helps soothe muscles and alleviate tension. The warmth generated by infra-red rays can create a calming effect on the body, making it beneficial for clients seeking relief from stress and discomfort. This therapeutic heat also encourages lymphatic drainage and can enhance metabolic processes, contributing to overall relaxation.

While infra-red rays can have various uses in skin treatments, their main application in the context of relaxation stands out. Utilizing infra-red treatments in therapeutic or spa settings exemplifies this beneficial property, supporting the idea that they are mainly added to procedures aimed at creating a serene environment for clients.