Archive for February 2015
February 19th, 2015 by Dr. Hannah Sivak
February 19th, 2015 by Dr. Hannah Sivak
February 19th, 2015 by Dr. Hannah Sivak
February 19th, 2015 by Dr. Hannah Sivak
February 18th, 2015 by Dr. Hannah Sivak
Oxidation and aging When it comes to skin aging, there are two main culprits: UV light and oxidants. Much of the damage caused by UV light happens through reactive oxygen species (ROS*), so ROS* are key to skin aging and health. [Reactive oxygen species, ROS*, are chemically reactive molecules containing oxygen.]
February 17th, 2015 by Dr. Hannah Sivak
Rosacea is a chronic skin disorder that affects more than ten million Americans, with almost half of the sufferers aged between 30 and 50 years old. The disease has been called “the Celtic curse” because it affects people of Northern European descent more often. Women are more likely to suffer rosacea of the milder form, and men more frequently have the severe form, which involves deformity of the nose. Rosacea nearly always appears on sun damaged skin.
February 9th, 2015 by Dr. Hannah Sivak
The basics The color of our skin is partly due to the pigment called melanin. Other factors are the content of diet carotenoids, the bluish-white color of connective tissue, and the abundance of blood vessels in the dermis and the color of blood flowing in them (oxy- and deoxy-hemoglobin). Other minor pigments (minor unless you have a bruise) are bilirubin (the yellow hemoglobin degradation product that colors bruises) and the complete sequence, which includes hemoglobin to biliverdin to bilirubin to hemosiderin. The different skin colors among individuals and races do not reflect major variation in numbers or size of melanocytes, but rather different kinds and amounts of melanin produced by…
February 9th, 2015 by Dr. Hannah Sivak
Let’s talk about preservatives How do we make a product that is microbiologically safe for the user? First, we start with very clean ingredients and work in a very clean environment: the objective is to limit bacterial and fungal presence to a minimum. But bacteria and mold are part of our environment and, sooner or later, spores will make their way into your skin care products.