Other hair vitamins are made by people who don't have any experience with hair. Hair Formula 37 was developed by a certified hair professional who spent years researching the chemistry of hair and nutrients to develop the best hair growth supplement.
Hair Formula 37 is 100% guaranteed to be the best hair growth vitamins available anywhere.
There are many, many different kinds of hair, but the basic nutrional needs of all hair types are actually very similar. No matter what type of hair you have, you need the same essential nutrients to make sure it grows long and healthy.
Hair is made up primarily of a protein called keratin, so obviously a well formulated hair supplement will contain proteins (amino acids). However, the total amount does matter - for instance 4mg of any amino acid per serving does little good.
L-Cystine in particular is especially important to healthy hair. It is a sulfur containing amino acid that helps build strength in the hair and helps many chemical services. There is no question that you should find this ingredient in any vitamins for hair that claim to be the best.
Continuing with the healthy circulation idea, folic acid is another ingredient that shows up in the most effective hair vitamins. Folic acid works along with Iron to form red blood cells and convert food to energy. While you can certainly get your RDA of folic acid from your diet with a little effort, taking a hair supplement can get you there easier. Read more on folic acid and hair growth here.
The best hair vitamins contain true niacin in a proper dose (around 35mg). True niacin increases blood flow to the surface of the skin. While some formulas try to substitute Niacinamide, it does not quite carry the same benefit.
Amounts of niacin over 100mgs can sometimes produce a “niacin flush” in the average person. While this can be beneficial to the body, it isn’t necessary to increase the blood flow to the scalp. Niacin in a “flush free” amount in the correct dose to provide maximum blood flow to the scalp is ideal.
Biotin (Vitamins B7) is very important for hair health. In fact, it's so improtant it is often called vitamin H. It is essential for healthy hair and skin, and may even play a role in preventing hair loss in some men. Click here to read more about how biotin can help hair grow fast. The best hair vitamins will typically have at least 200mcg per serving.
One of the most common causes of hair loss in pre-menopausal women is not hormones, but a nutritional deficiency including depleted iron stores. The RDA for Iron is 4mg for an adult women, and ideally you'd get this from a supplement (for hair or otherwise) because foods that are high in iron tend to be not that healthy in general (red meat for instance).
For example 1000mgs of choline to 250mgs of inositol. The body produces its own inositol so a 4:1 ratio is a perfect blend.