Your Hair Problems Solved!

Root cause: Some hair loss is normal, but if you're clogging the drain daily, assess your stress. Elevated levels of the stress hormone cortisol can cause hair to fall out. No anxiety? Get tested for a thyroid disorder or anemia. Either could be to blame.

Fast fix: Chill, sister! Try switching to a jasmine-scented shampoo; studies show a whiff can calm you as effectively as some sedatives do. Even if you have a thyroid issue, baldness isn't a certainty. An Rx will regulate your gland and keep hair from coming out in clumps. Same goes for anemia: Your M.D. may tell you to beef up your iron intake by taking a supplement with 325 milligrams of the mineral, which will beef up hair, too.

Oscar Blandi Jasmine Smoothing Shampoo, $22

Root cause: We all have yeast on our scalp (gross, we know!), but some people are extra sensitive to it and develop flakes—a pretty common condition called sebhorreic dermatitis, says Paradi Mirmirani, M.D., a dermatologist in Vallejo, California.

Fast fix: As soon as you spot the white stuff, lather daily using a dandruff shampoo with pyrithione zinc (the key ingredient in most of them) to help soothe your scalp. After you're free of flakes, substitute the formula for your regular shampoo once a week. Still snowing after a month? Talk to your doc about prescription-strength creams to help lessen irritation. Now go put on a black top.

Clear Scalp & Hair Therapy Complete Care Shampoo, $6

Root cause: You love Mom and Dad, obvs, but they may be to blame for your shrinking strands. In fact, half of all women deal with some genetic thinning. Another culprit: the Pill, which may up your level of hormones that cue strands to thin.

Fast fix: When DNA is the culprit, Women's Rogaine, which is FDA-approved to regrow hair, is worth a shot. It's got 2 percent minoxidil, a vasodilator that experts think enlarges follicles and prolongs the hairs' growth phase. Pill takers, chat with your gyno about finding birth control with less progesterone (a hormone that may indirectly trigger thinning), Dr. Mirmirani advises.

Women's Rogaine, $30