Best Shampoo for Thinning Hair for Women

The best shampoos for thinning hair in women contain ketoconazole (a good fit if your scalp is flaky, itchy or oily) or caffeine (a good fit if you mainly notice shedding). Both have small studies behind them, and both work best as support. Minoxidil is the approved treatment for female pattern hair loss, so choose your shampoo to keep your scalp comfortable while minoxidil does the regrowing.

Can a shampoo regrow thinning hair?

No shampoo has matched minoxidil. Topical minoxidil is approved for female pattern hair loss. The FDA approved the 2% solution first, at 1 ml twice a day. In 2014, the FDA and Health Canada approved the 5% strength. A 2019 trial comparing ketoconazole and minoxidil in women describes topical minoxidil as the only approved treatment for female pattern hair loss.

Ketoconazole has been tested against minoxidil. In that six-month trial, 40 women with female pattern hair loss used either 2% minoxidil solution or 2% ketoconazole, 1 ml a day. The ketoconazole was a compounded preparation that stayed on the scalp, not a shampoo that rinses off. It helped, but more slowly. Women on minoxidil had improved by month 4, and the ketoconazole group improved only at month 6.

Ketoconazole was easier on the scalp. In the same trial, 10% of women on ketoconazole reported side effects, compared with 55% on minoxidil. Satisfaction did not differ in a statistically significant way between the two groups.

A shampoo sits on your scalp for a few minutes and then rinses away. Treat it as the part of your routine that keeps your scalp clean and comfortable, and let a treatment you leave on do the regrowing.

Which shampoos for thinning hair have studies behind them?

The ketoconazole shampoo result comes from men, and the authors of that 1998 study of long-term ketoconazole shampoo said its clinical significance would need a larger controlled study before anyone could judge it. The caffeine trial was double-blind. Neither the women nor the researchers knew which shampoo each woman had. It tested one specific formula, so another caffeine shampoo may not give the same result.

That includes Nioxin. Its caffeine content does not mean it will match the trial formula. Many of its Target reviews are marked as collected as part of a promotion. One reviewer wrote that it is "not a direct solution for hair regrowth."

Which shampoo fits my scalp?

If your scalp flakes, itches or gets greasy fast, start with ketoconazole. The Nizoral label covers flaking, scaling and itching. It tells you to use it twice a week, between your regular shampoos.

If your scalp feels calm and you mainly see more hair in the drain or on your brush, a caffeine shampoo fits. In the trial in women, it reduced how much hair came out. Hair loss intensity and hair strength also improved compared with the plain shampoo.

If you want your hair to look fuller tonight, a volumizing shampoo can help with the look. Buy it for that reason and not for regrowth.

If your part is getting wider or your ponytail is thinner, no shampoo has shown it can fix that by itself. That is when minoxidil belongs in your plan. Topical minoxidil stops hair loss from getting worse, regrows hair, or both, in most women. Our clinical team can prescribe minoxidil if it fits your goal.

What shampoo should I use with minoxidil?

Use a gentle everyday shampoo, and add a twice-weekly ketoconazole wash if your scalp flakes or itches. One woman described her experience after eight months on topical minoxidil: "dry scalp/flaking: my doc prescribed Keto shampoo which worked well but my insurance changed so now I use Nizoral which has a strong masculine smell that I actually really like. Helps a lot."

She also had to wash more than once to get the minoxidil out: "topical minoxidil seems to coat the hair pretty thickly so I find myself double and sometimes triple shampooing to get that 'squeaky clean' feeling." If minoxidil leaves your hair coated too, your everyday shampoo does the cleaning, and ketoconazole handles the flakes.

Mild itching or flaking can happen in the first one to two months of minoxidil. If it keeps going or starts later, it can be an allergy to minoxidil itself or to propylene glycol, an ingredient in many minoxidil solutions. In one reported case, a woman allergic to propylene glycol switched to a 5% minoxidil foam without it after her scalp healed. Tell your clinical team if your scalp gets red, scaly or sore.

The Nizoral label says not to use it on broken or inflamed skin. Stop and ask a doctor if a rash appears, or if your scalp gets worse or does not improve in 2 to 4 weeks. If you are pregnant or breastfeeding, ask before using it.

Some women on topical minoxidil grow extra facial hair. The same woman wrote: "Facial hair growth including lashes and brows. I'm okay with it. I now shave my face monthly."

A good shampoo keeps your scalp calm, but minoxidil regrows the hair. Take the quiz so our clinical team can see whether minoxidil fits your goal, and use your shampoo to support it.