Fun fact: we generally lose up to 50 hairs per day. While this is normally nothing to worry about, you may have noticed the amount sometimes increases with the change of season. This so-called "seasonal alopecia" is caused largely by autumn's dwindling sunlight and can last for weeks.

Luckily, adopting a good hair habits will keep hair looking as healthy and full as possible -- regardless of the inevitable seasonal shed. Like: drying your hair with a microfiber towel, using a boar bristle brush, and opting for hair products with gentle, natural ingredients.

It's also a great idea to take care of the hair from the inside out. Diet can help -- especially since certain nutrients are essential for healthy hair. One vitamin we all hear a lot about is biotin, also known as vitamin B7 or vitamin H. It's found in bananas, sweet potatoes, egg yolks, avocado, and more.

Biotin -- which gets its name from the Greek prefix bio, meaning "life" -- helps the body make energy from food. Like other B vitamins, it's essential for healthy skin, nails, and hair. Some studies suggest that biotin may be helpful for stimulating hair growth and preventing hair loss.

While scientific evidence is limited, many people anecdotally swear by biotin supplements -- and most experts say that because biotin is water soluble, it's relatively safe to take as a supplement. However, it's important to note that most experts also agree that additional research on biotin's true efficacy for hair loss and hair growth is still needed.

With that in mind, there are things to consider if you plan to take a biotin supplement -- or any over-the-counter supplement, for that matter. Be sure to look for supplements that are third-party lab tested to ensure high quality. And, do your due diligence by doing a quick search for other potential risks. For example, a few years ago, the FDA released a warning that taking biotin supplements can interfere with certain lab tests. The daily recommend dose for biotin ranges from 5 to 35 micrograms, but "many dietary supplements promoted for hair, skin, and nail benefits contain biotin levels up to 650 times the recommended daily intake of biotin," the agency reported. "Biotin in blood or other samples taken from patients who are ingesting high levels of biotin in dietary supplements can cause clinically significant incorrect lab test results such as falsely high or falsely low results, depending on the test."

With all this in mind, it's probably a best to amp up your biotin intake the old-fashioned way: via the foods you eat. "Many foods contain some biotin," the National Institute of Health's info page states. "Foods that contain the most biotin include organ meats, eggs, fish, meat, seeds, nuts, and certain vegetables such as sweet potatoes."