What effect do infra-red rays have on the skin?

The effect of infra-red rays on the skin primarily involves warming the deeper layers of skin tissues. This warming effect can lead to increased blood circulation in the area treated, promoting enhanced oxygen and nutrient delivery to the cells. Consequently, this can help in the healing of tissues and may support collagen production, which is vital for maintaining skin elasticity and firmness.

The action of infra-red rays penetrates beyond the surface, affecting the deeper dermal layers, and is often used in various therapeutic and cosmetic treatments. This makes it beneficial for conditions such as muscle soreness, joint pain, and even certain skin issues, where heat can enhance the overall treatment efficacy.

While other options discuss various skin effects, the primary function of infra-red technology distinctly centers on depth warming rather than effects like skin brightening, reducing oiliness, or drying out the skin. These other claims do not align with the established properties and typical applications of infra-red treatments.