Hair, Skin and Nail Plus, provided by Douglas Laboratories, supplies beneficial amounts of several vitamins,
minerals and other nutrients, specially formulated to support healthy hair, skin and nails.
FUNCTIONS : Vitamin C (ascorbic acid) has numerous biological functions. Foremost, it is essential for the synthesis of
collagen and glycosaminoglycans which are the building materials of all connective tissues, such as skin,
blood vessels, tendons, joint cartilage and bone. Vitamin C is the required coenzyme for two groups of
enzymes that catalyze the crosslinking of collagen fibers - lysyl hydroxylases and prolyl hydroxylases. As such,
vitamin C is essential for normal wound healing and capillary health. It also participates in the biosynthesis of
carnitine, serotonin, and certain neurotransmitters, including norepinephrine. Vitamin C is among the most
powerful antioxidants in humans and animals. It is a water-soluble, chain-breaking antioxidant that reacts
directly with superoxide, hydroxyl radicals, and singlet oxygen. Vitamin A (retinol) is a fat-soluble vitamin
essential for vision, growth, reproduction, cell division, and the integrity of the immune system.
Minerals play a variety of essential roles throughout the body. Calcium is the principal mineral constituent of
bone and is thus essential for healthy bone structure and function. Calcium also participates fundamentally in
blood clotting, nerve conduction, and muscle contraction. Magnesium is involved in energy metabolism, and is
notably important in the heart, skeletal muscles, and nervous system. Manganese is essential for antioxidant
systems in the body, bone growth, fat metabolism, and protein, nucleic acid, and cartilage synthesis. Zinc is
important for growth, immune system function, protein synthesis, antioxidant mechanisms, and wound healing.
In the human body, iron is present in all cells and has several vital functions -- as a carrier of oxygen to the
tissues from the lungs in the form of hemoglobin (Hb), as a facilitator of oxygen use and storage in the muscles
as myoglobin, as a transport medium for electrons within the cells in the form of cytochromes, and as an
integral part of enzyme reactions in various tissues. Today, scientific research supports horsetail grass’ use as
a wound healing agent, particularly for the repair and maintenance of connective tissue. Horsetail grass’ high
content of silicon as silica is responsible for these therapeutic effects. Connective tissue, e.g. bone, tendon,
cartilage, blood vessels, and skin, contains most of the silicon found in the body. Silicon’s primary role in the
maintenance and repair of these tissues is thought to involve their structural framework as silicon appears to
be an integral part of their supporting protein and glycosaminoglycan complexes. A deficiency of dietary silicon
negatively affects the structure of this supporting matrix, i.e. collagen, elastin, and glycosaminoglycans, more
than the mineralization process itself. Phosphatidylserine, a phospholipid nutrient found in lecithin, is active in
cell membranes and is the major acidic phospholipid component in the membranes of the brain.
Hair, Skin and Nail Plus may be a useful dietary adjunct for individuals who wish to support healthy hair, skin
HAIR, SKIN AND NAILS PLUS