Skin aging research is constantly revealing how age related changes within the dermal layers impact skin clarity, luminosity and radiance. Cumulative changes in the three key skin color chromophore, Melanin, Hemoglobin and Collagen are among the main culprits.
Human skin tone is due to each individual’s unique dermal concentration and the distribution of skin chromophores, molecules that absorb or reflect light. While a number of chromophores are present in human skin, the most relevant ones in driving skin coloration are melanin, hemoglobin and collagen.
Regardless of the type of skin tone individual is, uniform, even-toned skin has a luminous “lit from within” quality that is emerging as one of the most critical characteristics of healthy, youthful attractiveness. Skin texture is also an important component, because smooth, fine-textured skin reflects light more evenly.
In young skin, melanin is evenly resulting in a glowing, uniform skin tone. Collagen being in good condition, it is highly scattered, reflecting light back from deep within the skin to produce a natural glow. As skin ages, UV radiation damages collagen, making it unable to reflect light optimally. It is also well documented that the concentration and uniformity of dermal collagen decreases with age resulting in a dull, less luminous complexion. Additionally, as cell turnover decreases with age, excess of melanin can become trapped in the epidermis and stratum corneum, contributing to a duller skin appearance.