Here’s a little lesson on the skin. Our skin consists of three layers: the epidermis, dermis and subcutaneous tissue. Epidermis represents the outer layer, dermis is the middle and subcutaneous is a layer of fat and connective tissue that contains larger blood vessels and nerves. It important in regulating the body’s temperature. For our purposes, the epidermis and dermis are the most important when we’re looking at the skin’s condition and how skin care products can affect the skin’s condition on the surface and underneath. Also, what products are effective in each layer.
There are some ingredients in moisturizers that are small enough to penetrate the skin cells of the epidermis. Small, light molecules can travel deep as the interface between the epidermis and the dermis. Other ingredients produce changes deep in the skin by sending messenger molecules into the dermis to stimulate the manufacture of important skin components.
Both glycolic acid and retinoids increase the production of hyaluronic acid in the dermis. Yesterday’s blog dealt with the use of hyaluronic acid on the skin’s surface to trap moisture from the environment which helps keep the skin looking smooth. So, we see hyaluronic acid in both layers, one applied on the surface and the other stimulated by other natural ingredients. Algae peptides also are able to penetrate into the dermis. Results of clinical trials show that a twice-daily application of 5 percent algae peptides improved hydration of the skin by 128 percent after only one month.
So when choosing facial moisturizers and exfoliates look for ingredients like: hyaluronic acid, glycolic acid, retenoids and algae peptides. We’ll discuss lipid drops at another time.









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