Hair Growth Shampoo Many brands claim to sell shampoos that will make your hair grow faster. But an effective hair growth shampoo needs to contain ingredients that actually make a difference if applied topically, rather than ingested. Some substances are effective both ways. One of these is biotin. Biotin is a B vitamin that plays an essential role in the health of our skin, nails, and hair. It plays an important role in the formation of keratin, the protein that is the main building block of hair. It is a common ingredient in nutritional supplements and hair growth shampoo alike. Niacin is another ingredient commonly found in a hair growth shampoo. This is a B3 vitamin that helps transport energy we eat into all the cells of the body. It converts carbohydrates to energy and prevents it from turning into fat. Niacin also reduces scalp inflammation, improves blood circulation, increases keratin production and repairs DNA. It has been found to induce hair growth even when applied topically. You can make your own niacin hair mask using avocado. According to dermatologists from the University of Jena in Germany, caffeine is really effective in battling hair loss. This is because they stimulate weakened hair roots and protect them from testosterone, which can have a harmful impact on hair growth. However, there are doubts whether it is actually effective to apply caffeine topically to the scalp. Zinc helps fight dandruff and keep the scalp healthy, which promotes healthy hair growth. It is an ingredient in several shampoos, for example, the dandruff fighting classic, Head and Shoulders. A very common ingredient in hair growth shampoo, ketoconazole, is an antifungal medication. This is scientifically proven to be effective in fighting hair loss, but it also comes with side effects. If you are sensitive to antifungal medications, it could cause skin rashes, headaches, abnormal hair texture or dry or oily scalp. Some shampoos also contain minoxidil or propecia, but these medications can be dangerous and carry with them serious side effects. We do not recommend using these medications, but rather to choose a shampoo with natural ingredients.