https://goldencondor.org/follicle-rx 

Biotin hair growth takes up a vital role in maintaining healthy hair follicles and scalp whether the supplement is taken orally or applied topically. Biotin which is also well-known as vitamin B-complex or B7 plays an important role in transforming food and stored body fat into energy that is necessary for the body. Follicle RX Since Biotin is soluble in water it makes it almost impossible to be accumulated in the body. Due to this reason, Biotin for hair growth must be acquired through food daily to be effective. Egg yolks, sardines, shellfish, chicken, salmon, organ meats, cauliflower, mushrooms and bananas are rich sources of biotin. Although you may be consuming most of these foods regularly, you may not be taking in enough biotin to bring about an effective change necessary for rejuvenation of your hair.