Eat more protein.
One of the most common reasons for thin hair is not eating enough protein. Protein sources should be varied and should include both animal and plant sources for the widest range of amino acids.
To figure out the approximate number of grams of protein you need each day, take your body weight in pounds and divide it in half. If you weigh 140 pounds, it’s about 70 grams of protein daily; for someone at 160 pounds, it’s about 80 grams.
While this might sound like a lot, including protein at each meal can help.
Take a daily multi-vitamin/mineral supplement.
A varied diet is the best way to get your vitamins and minerals to support optimal health. A range of vitamins and minerals support hair health, including biotin, vitamins B6 and B12, folic acid, iron, zinc and omega-3-fatty acids. Studies show that deficiencies in some or all of these can contribute to thinning hair. However, it's unclear whether adding more, beyond adequate intake can boost hair health.
Manage your stress.
Chronic stress, a reflection of chronic inflammation in the body, can contribute to thinning hair. Whether it’s deep breathing, a daily walk, yoga, or a relaxation app, reducing your stress and changing your response to it might help.
Try a scalp massage.
A small, preliminary study done in Japan shows that regular scalp massage might help thicken existing hair on your head, although it doesn't impact added growth, or make it grow faster. While the mechanism of action is unknown, it may be related to increased blood flow in the scalp. Bonus: A scalp massage might also help with stress reduction.
Use gentle tools.
In addition to shampooing less often, review your hair tools, like brushes, dryers, and curlers. And shampooing less often can help, especially with the help of dry shampoos.
IF THESE DON’T HELP: It’s a good idea to see your doctor. Start with your primary care doctor, as multiple endocrine and hormonal reasons might contribute. You might also be referred to a dermatologist.