Natural herbal blend for hair loss & thinning hair†

Formulated specifically for men, this safe and effective natural hair regrowth formula helps to block the production of DHT, the "bad" form of the hormone testosterone, and provides intensive nourishment to revitalize the scalp and enhance hair growth.†
Research indicates that one of the primary causes of age-related hair loss is the increased level of DHT (dihydrotestosterone), the “bad” form of the hormone testosterone. As men age, rising levels of DHT cause the hair to shorten its normal growth phase, resulting in a receding hairline, often coupled with a growing bald spot on top of the head. This type of hair loss is more commonly known as male pattern baldness, or MPB.
NuHair® for Men helps block the production of DHT and provides intensive nourishment to revitalize the scalp and enhance hair growth. This natural formula includes the DHT-inhibiting standardized herbs He Shou Wu and Saw Palmetto, as well as Silica, Biotin, and Folic Acid. For added effectiveness, Nu Hair® for Men also includes BioPerine® to deliver maximum results.†

NuHair® for Men provides intensive nourishment for:
 Receding hairlines†
 Breakage around the hairline†
 Excessively thinning hair†
 Poor hair density†
 
Key Ingredients
NuHair® Botancial Blend
Saw Palmetto Extract (Serenoa repens) (berry), Phytosterol Complex (soy), Kudzu Extract (Pueraria lobata) (root), Soy Extract, (Glycine max) (soy germ)
He Shou Wu (Fo-ti)
Chinese herb traditionally used to promote the appearence of thick, healthy hair. (Polygonum multiflorum) (root)
BioPerine® Black Pepper Extract
Fruit extract of black or long pepper standardized to 95% piperine

Healthy hair growth consists of three phases:

1. Anagen phase:
This is the growth phase of the hair cycle during which new hair is formed; lasting from two to six years in a healthy person. Some people have difficulty growing their hair beyond a certain length because they have a short anagen phase of hair growth, whereas people who easily grow long hair have a long anagen phase of hair growth.
2. Catagen phase:
This is the transitional stage between the growing (anagen) and resting (telogen) phases of the hair's growth cycle, lasting about one to three weeks. During this phase, hair growth stops and the outer layer, or sheath, of the hair follicle shrinks and attaches to the root of the hair. This is the formation of what is known as a club hair, which will eventually be pushed out and replaced with new hair.
3. Telogen phase:
This is the resting phase of the hair growth cycle that lasts about 3 months. The hair does not grow in the telogen phase. While hair mostly stays attached to the follicle during this stage, natural shedding does occur in this stage. The hair follicle re-enters the anagen or growth phase at the end of the telogen phase, and the hair growth cycle continues.

More info from Natrol.