I take this one:

That's the Nature's Bounty biotin pills. They're quite tiny and round.
I didn't buy them in dollars (because I'm not in the States), but however, I checked the price and it's supposed to be about $5.99 at any drugstore.
Things I use: Olive Oil, Canola oil, rosemary oil, aloe vera gel, shea butter, mayonnaise, eggs, milk, bananas

Everything I use is 100% natural. I make most of them myself because then I'm sure what's in it and I'm sure nothing's added, it's pure, it's natural.

Things I avoid: Mineral oil (codename: Baby oil), heat (I'm a total, no hair driers, no straighteners, no curling irons, no flat irons, no hot combs...nada), sodium chloride

Growing plan: At least 6 inches longer in a year.