Our skin consists of several layers. The protective outer layer is called the Epidermis or scarf skin. Beneath this is a deeper lying layer called the Dermis or true skin. It is this layer that gives the skin its strength; it consists of a dense structure of connective tissue containing collagen and elastin fibres that keep the skin firm and supple. As we grow older, the production of new cells diminishes, reducing the number of collagen and elastin fibres. As a consequence the skin gradually loses its elasticity, resulting in lines and wrinkles.


Scientists have observed that exposure of the skin to yellow, orange and/or red light leads to higher production of collagen. This works as follows: In addition to collagen and elastin, the skin also contains fibroblasts. These are special cells that synthesize collagen. Light penetrates the skin to a depth of 10 mm, causing the fibroblasts to grow and divide. Production of collagen and elastin are stimulated in this manner, improving the elasticity of the skin.