Here’s a fun (and totally not stressful) fact: we typically lose up to 50 hairs a day. While that’s usually nothing to worry about, you might have noticed that the amount of hair you lose changes with the seasons. This so-called “seasonal alopecia” is mostly caused by shifts in temperature, sunlight, and other factors.

Luckily, building good hair habits can help keep your hair looking healthy and full, no matter the seasonal shedding. Some simple ways to do this include drying your hair with a microfiber towel, using a boar bristle brush, and choosing hair products with gentle, natural ingredients. Then there’s biotin, one of the most popular supplements for hair growth and retention.

The benefits of biotin for hair

Biotin—named after the Greek prefix bio, meaning “life”—helps your body turn food into energy. Like other B vitamins, it’s essential for healthy skin, nails, and hair. Some studies suggest that biotin may help stimulate hair growth and prevent hair loss.

You can get biotin from a varied diet—it’s naturally found in bananas, sweet potatoes, egg yolks, and avocado—and it’s also available as a supplement. Dr. Hadley King previously told Vogue that biotin is linked to hair growth because studies show that one of the main signs of a biotin deficiency is hair loss.

However, Dr. King cautions that the connection between hair loss and biotin hasn’t been studied enough to be certain. “More research is needed to determine whether biotin supplements can improve skin, hair, and nail health in adults,” she says, “especially for those who aren’t deficient in this vitamin.”

How to use biotin for hair loss

While scientific evidence is limited, many people swear by biotin supplements based on their own experience. Experts note that biotin is water-soluble, which means it’s generally safe to take as a supplement. Still, it’s important to remember that most experts agree more research is needed on how effective biotin really is for hair loss and growth.

With that in mind, there are a few things to consider if you plan to take a biotin supplement—or any over-the-counter supplement. Look for products that have been third-party lab tested to ensure quality. And do your homework by quickly checking for other potential risks. For example, a few years ago, the FDA warned that taking biotin supplements can interfere with certain lab tests. The daily recommended dose of biotin is between 5 and 35 micrograms, but “many dietary supplements promoted for hair, skin, and nail benefits contain biotin levels up to 650 times the recommended daily intake,” the agency reported. “Biotin in blood or other samples from patients taking high levels of biotin in supplements can cause clinically significant incorrect lab test results—either falsely high or falsely low, depending on the test.”

Biotin or collagen for hair loss?

Collagen is another popular ingredient linked to hair growth. Unfortunately, when comparing biotin and collagen, neither is a magic fix for hair loss. But biotin has been studied more thoroughly, so it’s a safer bet if you’re hoping to see results.

The best biotin for hair

The NIH recommends that adults get about 30 micrograms of biotin per day (women who are pregnant or breastfeeding should consult a doctor about the right amount).

Experts agree that the best way to boost your biotin intake—whether you’re deficient or not—is the old-fashioned way: through your diet. Here are some options and how they can help you meet your daily biotin needs, according to The Clev.Biotin-Rich Foods for Healthy Hair

Organ meats like liver are excellent sources of biotin. Just 3 ounces of chicken liver provides 460% of your daily goal, while the same amount of beef liver gives you 100% of the 30 mcg target.

Fish: Salmon is a great choice, with 3 ounces offering 17% of your daily biotin needs.

Meat: Pork chops and ground beef are both rich in biotin, each providing 13% of your daily serving in 3 ounces.

Eggs: One cooked egg contains 33% of your daily biotin goal, so a protein-packed breakfast of three eggs can easily help you meet it.

Seeds and nuts: A quarter cup of peanuts gives you 16% of your daily biotin, while the same amount of sunflower seeds provides 9%.

Vegetables: Focus on options like canned mushrooms, sweet potatoes, spinach, and broccoli, each offering just under 10% of your daily biotin goal.

If you eat a balanced, healthy diet—including healthy fats, lean proteins, whole grains, and a variety of fruits and vegetables—you’re likely already getting enough biotin. But if you want to boost your hair health, try adding these tasty biotin sources: avocado, sweet potato, eggs, salmon, tuna, sardines, broccoli, spinach, almonds, mushrooms, legumes, walnuts, and sunflower seeds.

Can Biotin Shampoo Help Hair Growth?

You may have noticed biotin in many hair products like shampoos, conditioners, and serums. However, there’s little evidence that applying biotin to your hair improves its quality. One scientific review notes, “While getting enough biotin in your diet supports healthy hair, there’s little data to show it helps healthy individuals.” It adds, “Many over-the-counter hair loss treatments sold online are natural products with very little proof of effectiveness.”

Biotin-Enriched Hair Treatments

That said, many biotin-enriched products also contain other high-quality ingredients that can boost fullness, volume, and shine—which can be a lifesaver during heavy shedding seasons. If you want to try a shampoo, conditioner, or other hair product with biotin, here are some good options:

– Coco & Eve Hair Volumising Shampoo & Conditioner Set ($45, $34 on Amazon, 24% off): This Boost Therapy range uses biotin, hydrating panthenol, coconut oil, and the brand’s Biovolume 128™ complex, clinically proven to increase hair volume after three months.

– JVN Hair Embody Volumizing Conditioner ($24 on Amazon): Great for damaged hair, this conditioner adds bounce and vitality with bamboo extract, biotin, and squalane.

– Ouai Fine Shampoo and Conditioner Set ($64, $51 on Amazon, 20% off): Designed for fragile, shedding hair, this duo works on the scalp with hydrolyzed keratin, biotin, moisturizing hemp seed extract, and chia seed oil.

– Olaplex No. 4 Bond Maintenance Shampoo ($34, $23 on Amazon, 32% off): Like other Olaplex products, this best-selling shampoo helps weakened hair, split ends, and broken strands.

– Virtue Full Shampoo ($42 on Bluemercury, $44, $31 on Amazon, 30% off): A blend of biotin, hydrolyzed quinoa, and alpha keratin 60ku™ protein adds shine, strength, and repair.

– Augustinus Bader The Leave-In Hair Treatment ($86 on Nordstrom, $93 on Amazon, $54 on Bluemercury): Developed over 30 years of research, this treatment protects hair from heat styling, UVA/UVB rays, and chemical treatments.

– Oribe Serene Scalp Balm (price not listed): A scalp-balancing option.Conditioner
$193 – Amazon
$193 – BlueMercury

This conditioner contains several active ingredients that are super-hydrating and strengthening, including biotin, panthenol, and quinoa.

Save to wishlist
Save to wishlist

Rahua
Enchanted Island Shampoo
$36 – BlueMercury

This shampoo has an irresistible scent of guava and coconut. It also features carefully selected active ingredients like biotin, vitamins B6, A, C, and E, along with rahua oil—the brand’s signature ingredient.

Frequently Asked Questions
Here is a list of FAQs about using biotin for hair growth written in a natural tone with clear direct answers

BeginnerLevel Questions

1 What exactly is biotin and how does it help my hair
Biotin is a B vitamin that your body uses to turn food into energy It helps create keratin the protein your hair is made of which can make strands stronger and less prone to breakage

2 What foods are the best natural sources of biotin for hair
Egg yolks are one of the best sources You can also get biotin from nuts seeds sweet potatoes spinach and salmon

3 Should I take a biotin supplement or can I just eat the foods
If your diet is balanced and includes biotinrich foods you likely dont need a supplement Supplements are best if you have a deficiency or a medical reason and your doctor recommends it

4 How long does it take to see results for hair growth with biotin
Its not instant Most people need to take it consistently for at least 3 to 6 months to notice any difference in thickness or growth rate

5 Is there a specific time of day I should take biotin
No there isnt a best time Just take it at the same time each day to build a habit Taking it with food can help prevent an upset stomach

Advanced Practical Questions

6 Whats the correct dosage for hair growth
Most biotin supplements for hair contain 2500 to 5000 micrograms per day The recommended daily intake is only 30 mcg but higher doses are common for hair goals Always start with a lower dose to see how your body reacts

7 Can taking too much biotin cause side effects
Biotin is watersoluble so your body usually flushes out the excess However very high doses can cause skin rashes digestive issues or acne breakouts in some people

8 Will biotin work if my hair loss is due to genetics or hormones
Probably not Biotin only helps if your hair loss is linked to a biotin deficiency or brittle weak hair It wont reverse genetic male or female pattern