Skin micro-relief (texture) and pore sizes can be quantitatively analyzed with 3D data acquired from silicon resin skin surface molds using a confocal microscope.
Measurement / Visualization Technology
The multifaceted skin measurement technologies play an important role in objectively knowing the skin of customers and verifying the effects of cosmetics products, etc. The recent, remarkable advancements in optical peripheral and analysis technologies have enabled us to study not only skin surface forms but also its inner structures and conditions without sampling actual skin.
Skin Surface Form Measurement
First of all, we will introduce the latest technologies to measure skin surface forms from the micro to the macro levels.
Highly accurate skin micro-relief (the texture) and pore analysis
Wrinkle and sagging measurement
Using the fringe projection method, 3D forms of skin surface can be directly measured. We use different devices appropriate for each objective from relatively narrow areas such as corners of the eyes to relatively wide areas such as the whole face. We apply these technologies to evaluate the level of wrinkle and sagging.
Special camera technique for measuring skin conditions
When we see our skin with the naked eye, we see it in visible light, but in invisible ultra violet or near-infrared light, we can capture images of various skin conditions.
Visualization of skin’s moisture levels using near-infrared light
By combining a highly-sensitive near-infrared camera and a diffused lighting system, we developed a system to capture images of skin’s moisture levels. We are using this system for verifications of the efficacy of skincare products in maintaining and balancing skin’s moisture levels.
Visualization of potential dark spots using UV rays
We study potential dark spots invisible to the naked eye by combining a UV camera and diffused lighting system.
Evaluation of skin’s clarity level with the internal reflection light
Light that goes through the inner skin, diffuses/reflects and returns to the surface is called internal reflection light, and this light produces clarity of the skin. We measure skin’s clarity level by shining light on the skin in a slit form and detecting the level of diffusing internal reflection light.
Visualization of skin inner tissue
The latest measurement technologies have made it possible to directly study skin’s inner structure and conditions using “light” without sampling actual skin. In future, it is expected that these measurement technologies will further reveal the relationship between UV rays and various signs of age, and skin’s inner conditions and structure and will be applied to the development of cosmetics products which are effective for roughness, winkles, and whitening, etc. of the skin.
High-resolution study of epidermis cells and melanin
A confocal biomicroscope can capture horizontal cross-sectional images of the inner skin in real-time from the skin surface so that we can directly study the conditions of epidermis cells and melanin, etc. Also, it is possible to reproduce skin’s inner structure in three dimensions using multiple horizontal cross-sectional images captured at different depths.
Study of dermal collagen and elastin fibers
By targeting deeper dermis using a multiphoton microscope, we specifically study the construction of collagen and elastin fibers, using second harmonic generation light and two-photon excitation fluorescence light respectively.