Does red light therapy increase collagen production?

Yes, increased collagen production is one of the most well-documented and widely recognized benefits of red light therapy.

Collagen is a structural protein that gives skin its firmness, elasticity, and smoothness. As we age, collagen production naturally declines, leading to wrinkles, sagging, and loss of skin vitality.

Red light therapy helps stimulate fibroblasts, the cells responsible for producing collagen. When these cells receive more energy—thanks to increased ATP production—they become more active and efficient.

Over time, this leads to thicker, healthier skin with improved texture and reduced fine lines. The process is gradual, which is why consistent use is essential.

In my own observations, users typically begin to notice improvements in skin tone and texture within a few weeks, with more significant changes appearing after one to two months of regular use.

This is also why wavelength selection matters. Red wavelengths around 630nm to 660nm are particularly effective for skin-level benefits, as they are absorbed in the dermal layers where collagen production occurs.