Topical treatments like oils, shampoos and conditioners may not always be effective in promoting hair health and growth. Supplements which can be taken orally are highly effective in preventing hair loss and promoting hair growth. Biotin is an essential component of hair care supplements. It stops hair fall and improves the quality of hair. Biotin supplements come in 500 microgram capsules. They can be taken daily to promote hair health. Silica is a major constituent of hair and nails. Supplements containing this mineral can help keep hair healthy and strong. It also prevents hair loss and damage. A main cause of hair loss, especially in women, is iron deficiency anemia. Iron supplements can help reduce hair loss to a great extent. Use a supplement which does not cause constipation and provides high levels of bioavailable iron. Protein supplements are also essential for hair health. Proteins are the building blocks of hair. Protein supplementation can help keep hair healthy and strong. You can also use amino acid supplements like L-arginine supplements to help maintain hair health. L-arginine aids in circulation and promotes hair growth. Some hair health supplements contain herbs like nettles, aloe vera. They help keep hair healthy and strong.