When you decide to jump on the biotin for hair growth trend, you may be disappointed by your results compared to others. The reason might be: You are not taking it as directed. Some require you take with food preferably with your main meal or others require you take with just a meal. Different dosage for each one. Each brand of biotin has a dosage to be taken. In addition, you may find that each dosage varies in potency too. Your body needs other Supplements you are deficient in to have the boost it wants. Switching full supplements like mane choice, nature's bounty, Mielle, beautifully bamboo among others will be of more benefit. Not drinking enough water translates into your body not being able to fully excrete excess biotin. This leads to acne breakouts. Last one is about what your own hair routine. If you take all the supplements in the world yet your hair routine doesn't cut it, you won't retain any growth you get.