Biotin Results After 1 Week: How Long Does It Take to Work?


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We know — you’ve probably heard about the magic of biotin for hair growth. We’ve all had that friend (or TikTok influencer) who swears by it. But for real, does biotin actually work? And if so, how long does biotin take to work?

In this piece, we’ll dive into all the basics of biotin — from what it is to how much you should take.  Then we’ll see if the science really lives up to the hype — because if biotin can work in one week, color us impressed.

What Is Biotin?

First of all, in case you’re wondering what the heck biotin really is, here’s your 101. Biotin is a water-soluble B vitamin and an essential nutrient found in various foods. 

For optimal hair health and strong nails, biotin and other B complex vitamins are vital for optimal hair health and strong nails. If you’re dealing with hair breakage, thinning hair, baldness, alopecia or brittle nails, biotin — or a lack thereof — may be at the root of it. That said, it’s important to note that biotin deficiency is rare.

Many foods naturally contain biotin, so if you eat a balanced diet that includes sources of biotin like eggs (including the yolks), meat, fish, nuts and seeds, you’re probably covered. In fact, there has never been a reported case of severe biotin deficiency in a healthy individual consuming a normal mixed diet.  

Butttt if you’re wondering how to tell if you have biotin deficiency specifically, symptoms may include: 

  • dry skin

  • hair loss 

  • fatigue

  • dry eyes

  • Insomnia

  • depression

  • skin rashes

If you’re nervous that you may have a biotin deficiency, you can up your levels with a biotin supplement. Or, you can connect with a healthcare provider to talk about your hair, the potential reasons it could be thinning or damaged, and the available options for treating hair loss — such as medications like minoxidil.

Believe it or not, there are other essential hair vitamins worth knowing about out there, too. 

(RelatedFinasteride for Women: Can Women Use Finasteride For Hair Loss?)

How Long Does Biotin Take To Work?

Ever heard that Rome wasn’t built in a day? Well, you can’t exactly turn into Rapunzel that fast, either. 

If you’re hoping for a miracle after just one week of biotin supplementation, it’s probably time to pump the brakes a bit. Realistically, you won’t notice any real results from biotin supplements for at least the first two to three months of regular use – and if a biotin deficiency wasn’t the problem to begin with, you probably won’t notice any real results from biotin supplements then, either.

But that doesn’t mean the stuff isn’t working if biotin is what your hair needs!! It’s essential to set level expectations when it comes to supplements like biotin — you likely won’t be letting your hair down after a mere seven days. 

Like most things, hair growth takes time. On average, at your prime, hair grows about half an inch a month and up to six inches per year. That’s slower than a snail’s pace, so just be patient. 

How Much Biotin to Take for Hair Growth

Because biotin is a supplement, the Food and Drug Administration (FDA) hasn’t established any recommended daily doses for it in the same way they do with prescription medications.

That said, the National Institutes of Health (NIH) recommends a daily intake for biotin supplements of 30 micrograms for adults 19 years of age or older. In most cases, you can meet that 30mcg recommendation through your daily diet. 

While there aren’t representative estimates of biotin intakes in the United States, the NIH reports the average biotin intake from foods in other western populations is about 35–70 mcg/day.

So, there’s no real standard here. The good news, however, is that even if you eat well beyond the round-about recommended daily allotment, you won’t suffer any rough adverse effects. For instance, our gummies have 300mcg of biotin in one gummy. For those keeping score at home, that’s 1,000 percent of your suggested daily value.

Also, quick public service announcement: since biotin is water-soluble,  your body can’t store it. That means you need to take it daily…. popping a supplement every few days will definitely not do the trick. Like many other things in life, consistency is key for healthy hair. 

Additionally, having extra levels of biotin may offer little to no real benefits for your hair. It can also increase your risk of showing false, inaccurate results on certain lab tests and blood tests.

(RelatedHow to Prevent Hair Loss in Women)

Biotin Side Effects

Now, before you add a biotin supplement to cart, you’re probably wondering, “Well, what are the biotin side effects for females?” 

And the answer is: generally, none. You may experience an upset stomach, but typically, this B vitamin is perfectly safe and side effects of biotin are super rare.

However, it’s always a good rule of thumb to talk to your healthcare provider to make sure any nutritional supplements won’t conflict with any medications you take or any medical conditions you may have. And as we mentioned, biotin supplementation can also interfere with certain heart and thyroid tests — so it’s important your provider be aware if you are taking it.

The Takeaway: Does Biotin Really Work After 1 Week?

We love fast results — who doesn’t? While biotin can work to bolster hair health (if you have a deficiency), you won’t see results in just one week. Over time, that can change.  Here’s what you need to keep in mind: 

  • If you choose to supplement, stay consistent with taking it daily since biotin can’t be stored in your body.

  • If you choose to supplement, the NIH recommends 30 micrograms for adults 19 years of age and older

  • Be patient. There isn’t definitive research yet showing that biotin can help promote hair growth (if you’re not deficient).  

This article originally appeared on and was syndicated by

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Discover the Most Popular Hairstyles the Decade You Were Born

Discover the Most Popular Hairstyles the Decade You Were Born

There are so many things that define each decade, from the food we eat to the clothes we wear. But none of the things we’ve looked back on were quite as polarizing as the hairstyles. From piled-high funky styles to buzzed dos, here are the most popular hairstyles from the decade you were born, spanning from the 40s to the 2000s. 

Wikipedia / Mediafeed

Inspired by the glitz and glamour of Hollywood women at the time, the victory roll hairstyle featured tight curls pinned toward the face to frame it. Victory rolls were customizable, so you could opt for a single roll or different symmetrical or asymmetrical versions of dual rolls. 

Other popular hairstyles of the decade for women included tight curls, waves, and the pageboy. Women were also big on hair accessories, particularly the snood, which was essentially a crocheted bag used to cradle the hair and keep it in place. Both men and women sported the infamous pompadour during the ’40s. Men were also partial to quiffed hair or short curls and were also prone to just slicking their hair back.

Wikipedia / U.S. Army – Yank, the Army Weekly

Everyone knows the beehive hairstyle, whether you associate it with the ’50s or Amy Winehouse. All you had to do to be cool in the 1950s was pile your hair on top of your head in a conical shape to resemble a beehive. Lots of hairspray was needed for this one.

If your hair wasn’t long enough for the beehive, you might have sported other bouffant hairstyles, a poodle cut, an Italian cut, victory rolls, or even a pixie cut. Men were still into the slicked-back look along with side parts, the pompadour, or — if they were influenced by Elvis later in the decade — a Rockabilly do.

Wikipedia / Warner Bros.

Bouffant (derived from the French verb “bouffer,” which means to puff or fluff up) hair became popular during the 1950s, but dominated in the 1960s thanks to the iconic Jackie Kennedy sporting the style. The puffy, rounded hairdo was especially popular among housewives during the ’60s. 

Women also gravitated toward shorter hairstyles (influenced by Twiggy), including pixie cuts and flipped bobs and, for long hair, bangs. Men styled their hair with everything from the bowl cut and the ducktail cut to shag cuts and styles copying The Beatles.

Public Domain / Wikipedia

During the 1970s, the afro became a symbol of cultural and political expression, particularly within the African American community. The style pushed back against Eurocentric beauty standards and celebrated natural Black hair. Influenced by icons like Angela Davis and the Jackson 5, the afro surged in popularity, crossing racial and cultural boundaries to become a mainstream fashion statement. Its voluminous shape was achieved through techniques like picking, and its prominence spread among both men and women.

Separately, and inspired predominantly by Farrah Fawcett, long, feathered hair was also sought after during the ’70s. 

Wikipedia / GeorgeLouis at English Wikipedia

Whether it was crimped, curled, teased, spiked into a giant mohawk, or cut into a towering flattop, the most iconic ’80s dos could all be tied to one main group: big hair. During this decade, freedom of expression was fully embraced and displayed through hair. Styles like Jheri curls were popular thanks to Michael Jackson, and Billy Ray Cyrus spearheaded the popularity of the business in the front, party in the back mullet. The ’80s were eclectic times that reeked of Aqua Net and perms. 

Wikipedia / Allan Light

You didn’t even need to be a fan or viewer of “Friends” to ask your hairdresser to give you “The Rachel” in the ’90s. Everyone knew exactly which version of Jennifer Anniston’s hair you wanted. Layered, framed around the face, and shoulder-length was the style that ruled the decade. Chunky highlights, side bangs, and hair flipped out at the bottom were also wildly popular during the decade. And who could forget chopsticks carefully stuck into buns? All the rage. 

If you were a cool dude during the ’90s, you might have had frosted tips, spiky hair, or cornrows.


All you needed was a few bobby pins and some hairspray to make a pulled-back pouf happen, and every girl in the 2000s was on board. High ponytails and pigtails, choppy layers, and money-piece braids were a go-to as well. 

Skater boy hair/emo boy haircuts that swooped halfway across a guy’s face were also iconic during the 2000s. Who else remembers watching guys shake their heads in slow motion to get the hair out of their eyes like they were playing a role in the “Baywatch” intro? We shudder at the memory. On the opposite end of the spectrum, buzz cuts were prominent, along with faux hawks. 


Featured Image Credit: Iryna Imago/istockphoto.