My personal second favorite ingredient in skincare: colostrum. This is a milky, fluid rich in protein, growth and immune factors that comes from mammary glands of a cow. These growth factors stimulate growth and repair aged/ injured skin, muscle and tissue. This ingredient is ideal especially for an impaired barrier (skin that has been injured), as it helps to prevent bacteria from attaching to the skin. The most important part of this product is that it helps in the production of growth factors, which are essential for cells to survive.
This ingredient is ideal for both sensitive and problematic skin types, both of which have an impaired barrier that leaves the skin unable to protect itself.