Biotin is a ridiculous supplement. It's purported to make your hair and nails grow stronger and faster and kickstart your metabolism to metabolize carbohydrates. For this reason, I always joke that biotin is the 'hot girl supplement.'
I've been taking 10,000 mcg of biotin (the maximum dose) every day for the past two years, and my hair grew from a short, shoulder-length cut my freshman year of college to hair past my waist now. It really does work.
That being said, it's reported to promote skin health as well. While I can't attest to that (because I didn't really pay attention to the difference between my skin then and my skin now), I do know that taking too much biotin can be bad for your face.
I found this out during a conversation with my hairstylist. She asked me how I grew my hair so long, and I raved about my miracle supplement. "Did it break you out at first?" she asked. I was perplexed. She explained how the excess vitamins in your system can inflame your skin and cause acne if you jump into a high dose immediately.
I thought back and realized I had started taking biotin at a 5,000 mcg level, because I didn't realize there was a higher dosage option. That's likely why I never experienced any adverse skin side effects.
If you're looking into adopting biotin into your regimen for hair or nail health, consider starting with a 5,000 mcg level before bumping it up to 10,000 daily. I should also note that there is such thing as taking too much; I heard a horror story a few weeks ago about a girl who took 20,000 mcg daily and had a seizure. Definitely not something to mess around with! Always follow the ingestion instructions on the back of the bottle.
Of course, you should always consult a doctor before starting any new supplement regimen! I'm not a physician (obviously, far from it), so I don't have the expertise to advise you to begin taking Biotin — but if you've ever been curious about it, I wanted to share the knowledge I do have and a little about my own experience.
Another thing I'd like to note is that taking biotin sporadically won't do much for you. It's a cumulative effect, so you need to take it daily to see any real results. Some critics question the claims that Biotin advocates make, saying it doesn't actually do what it says it will. I obviously don't know the science behind it, but what I do know is that my hair is now down to my waist, strong and healthy.
Thanks for reading!
All things beauty.