I was taking 5,000 mcg (5mg) of Biotin, Balanced B-Complex, 1,000 mg of Vitamin C, powder MSM along with various other vitamins. I was also taking large quantities of water too. I noticed my skin looked wonderful; bright, clear and dewy, which was amazing because I've been having some adult acne for the last 5 years.
Then I ran out of Vit. C. A few weeks went by and there was no change in my skin. A week after running out of B-Complex and my skin broke out on both sides of the cheeks and around the nose area.
It must be the B-Complex keeping the zits at bay because Vitamin C does not stay in the body long. So I say take the required dosage of B-Complex. I got a new B-Complex this time a time released Super Complex and after reading the supplemental facts on both bottles the Balance B-Complex actually had higher dosages of the same vitamins.
I also had an Einstein moment and decided to increase my dosage of Biotin without the Vit. C and B-Complex. I started having painful breakouts on my face. I've got all my vitamins again so hopefully I will stop breaking out. My nails are long and strong though. And my hair feels thicker.
My advice concerning the water is to get a LARGE bottle of water like 54 or 64 oz and drink from that all day. I actually add my MSM to that bottle in the morning. I also used that water for tea when at work.