Chances are, you’ve heard of biotin. You know that it has something to do with healthy, thick hair and strong nails. But, what exactly is it and how does it work? Let’s dig in.

What is Biotin?

Biotin is a form of vitamin B (vitamin B7 to be exact), and it acts as a coenzyme for multiple metabolic processes throughout the body. That means that when your body links different nutrients together to build healthy tissues, including strong hair and nails, it relies on biotin to execute that process.

Biotin deficiency can show up as brittle hair, or hair loss. You can get biotin through your diet, as it’s found in foods like eggs, avocado, beans and mushrooms. Of note, it’s only found in the yolk of the egg, so if you’re an egg white omelet kind of person, you’re missing out on the biotin of that egg.  It’s actually very rare to see a biotin deficiency in the US.  Since it’s a water soluble vitamin, you don’t build up stores of biotin in your body, because if you consume too much you actually urinate out the excess. While that’s an advantage when it comes to safety, meaning it’s hard to overdose on biotin, it also means you really need to be getting enough biotin on a daily basis, since you don’t hold onto it over time. Therefore, daily changes in your diet can very much affect the amount of biotin traveling through your blood to your hair follicles.

Supplementing with Biotin

To keep those levels more constant, I do recommend supplementing with biotin. BUT, this is an example where more isn’t better. I actually prefer that my patients supplement regularly with small doses of biotin than take large doses sporadically.  This keeps a steady flow of biotin reaching the stem cells in your scalp and your nail beds, the places it needs to go to help keep your hair and nails healthy.

While I always advise people to check first with their doctor before starting any new supplements, as your medical history can absolutely impact the best dose for you, most of my patients do well with taking about 1500 mcg (1.5mg) to 3,000 mcg (3 mg) per day via supplements.

A few caveats when it comes to biotin (again, be sure to consult your doctor before starting any new medication or supplement):

I always tell my patients not to consume raw egg whites if they are taking biotin. Raw egg whites contain avidin, which interferes with your absorption of biotin.  Also, let your doctor or lab tech know you’re taking biotin during any appointment or blood draw.  Biotin can impact certain lab tests, so it’s essential to communicate that you’re taking biotin any time you see a health care professional or get your bloodwork done.

Dr. Whitney

In my office, patients ask me about scalp and hair health all the time. People are often surprised to hear that the conversation surrounding clean, healthy hair is changing as the science evolves in this area. Most of the products we’ve been using set our hair up for a vicious cycle of damage and superficial solutions to mask that damage. I’m excited to share more information on what I believe is one of the groundbreaking solutions to the hair damage we have come to accept as normal.

People love a good lather, especially when it comes to their shampoo. The problem is, shampoo that creates a bubbly, rich lather actually contains harsh chemicals that damage your hair and make it very prone to something called hygral fatigue.

Hygral fatigue is a new, groundbreaking concept that has recently come to light. It means that water can actually damage hair. The longer your hair is wet, the more the hair actually swells and swollen, wet hair is especially prone to damage and breakage.  So most people shampoo, getting that rich lather, as soon as they get in the shower. Then, for as long as that shower takes, that vulnerable hair absorbs water, and absorbs more water, until it swells.  When you step out of the shower, you then towel dry your hair till it’s damp and then blow it dry while you style your hair. You notice week after week that your hair is getting frizzier, more damaged, and even more visibly dull.  So, you start using heavier products like conditioners and masks and leave on products that basically act like superficial band-aids.  They coat the hair with heavy products that give it a glossy shine, but the hair beneath isn’t healthy. It’s far from healthy, and that damage just gets worse year after year.

Based on the latest research, here’s the simplest way to get your hair back on track and restore damage that’s already been done — the concept is pretty simple:

Less water exposure + faster drying = healthy hair.

I’m going to walk you through the system that I use myself and recommend for my patients, which is called the AQUIS PRIME Hair Care System.  I was so impressed by the effect it had on my own hair that I partnered with the brand to help get the message out.  I’m going to walk through each step to explain exactly how I use each product.

Step 1: Before hopping in the shower, I spray my hair with the AQUIS Prime Water Defense PreWash Spray.  It actually protects hair from swelling and balances the natural pH of hair. So it’s literally protecting your hair from water damage during the entire shower.

Step 2: Before I get out of the shower, I massage in the AQUIS Prime Rebalancing Hair Wash.  No, it doesn’t create a bubbly lather, and that’s a GOOD sign.  It gently removes dirt, oil and other impurities without relying on those harsh chemicals that create bubbles and damage the cuticle.  Rinse out.

Step 3: I flip my head over and put on the AQUIS Rapid Dry Hair Turban. I used to be a Towel girl, but I have to admit I’ve recently switched to the turbans. At first I thought they’d be complicated to use, but they’re actually super easy.  You just put the part with button at the base of your skull, and then twist the turban, and then loop the loop around the button. Done.  So easy.  The towels and turbans are made with a special microfiber technology that wicks away wetness and cuts drying time in half.  So if you do end up using a blow dryer, you only have to use ½ the heat.

Step 4: Spray on the AQUIS PRIME Restorative Leave-In Conditioner.  I spray it onto damp hair, and then use a detangling comb to comb it through.  Most conditioners weigh down hair and trap even more water in the hair.  This one is lightweight but incredibly gentle and safe for hair.

Then I’ll either air dry or blow dry, but the time it takes to get it fully dry is cut in half.  The AQUIS Prime system actually gets to the root of the issue.  It’s not just damaging hair and then hiding that damage by camouflaging it with heavy chemicals that add a fake shine to hair and weigh it down.

I look forward to your questions! Please feel free to post below or on my social media channels!


Dr. Whitney


Beauty from the inside out – it’s a concept I talk about all the time when it comes to skin. As I tell my patients, if you want healthy, radiant skin over the long term, you have to get to the root cause of common skin conditions like acne, rosacea, eczema and even premature aging. If we address the inflammation that starts inside our gut through dietary choices and effective supplements, we can actually start to reverse and HEAL these skin conditions from the inside out. I have researched these theories for over ten years, seen incredible results in my practice, and even authored a best-selling book on the subject – that’s how much I believe in this inside-out approach.

So, when the AQUIS team reached out to tell me about a brand new, breakthrough hair system that would strengthen hair from the inside out – from core to cuticle – by addressing the root cause of hair damage, I was very intrigued! Their philosophy resonated with me and sounded spot on. I have been a fan of the AQUIS hair towels for years and years. This new hair system – one that protects your hair from damage before you even wash it – was innovative and disruptive, so it caught my attention!

Of course, as a scientist, physician, and media expert, I first had to review the science behind the products. Spoiler alert – it was excellent. The concept here is called “water fatigue.” Think about your nails when you emerge from a bath or from a pool – they are soft and weak. The same concept applies to your hair (which is made of keratin, just like your nails). When water is absorbed into your hair, the inside core of your hair strand swells, pushing open the cuticle (protective layer), which leaves your hair susceptible to more damage. This damage results in frizz, tangles, breakage, and dullness. Most of us don’t think of water as an enemy to our hair’s health, but if you look at your water soaked hair under a microscope and test it for breakage and damage as compared to dry hair, you would see things very differently!

Fast forward to my experience as an (honored) early tester of these products before they hit the market. This four piece system begins with the AQUIS Prime Water Defense Prewash (Step 1). Made with coconut oil (which helps to lessen your hair’s water intake by up to 44%), strengthening amino acids like cysteine and keratin, and avocado oil (to hydrate and protect), this prewash is an impressive and effective innovation. You spray it on your hair a few minutes before you get into the bath or shower and you don’t need to wash it out. Think of it as a primer. Now, I know this is a behavioral change because most of us are not accustomed to pre-treating our hair before we take a shower or bath, but it’s well worth the shift in my opinion!  (Quick cautionary note – it can make your floor slippery, so I stand on a towel when I spray.)

Next, you wash your hair using the AQUIS Prime Rebalancing Hair Wash (Step 2). It’s paraben free and sulfate free, so it doesn’t contain the harsh detergents that strip hair of its natural, healthy oils. This product is really gentle on your hair and scalp, helps to maintain the healthy pH of your hair, and it smells amazing.

Of course, you dry using the AQUIS PRIME Rapid Dry Turban (Step 3), which is what I have done for years to protect my hair. My daughter also uses these turbans because they dry your hair so quickly (50% faster – taking my very thick hair from wet to damp incredibly quickly), they protect your wet hair from frizz, breakage and damage, and they are so lightweight and comfortable to wear. I always keep one of these towels or turbans in my gym bag, pack one when I travel, and keep a bunch at our beach house because my whole family uses them (including my sister and her girls).

Finally, you spray on the AQUIS PRIME Restorative Leave-In Conditioner (Step 4). Made with avocado oil, aloe extract, strengthening amino acids and even a UV light absorbing agent to protect your hair from UV damage, this lightweight mist is hydrating and nourishing without any hint of grease. I love that you no longer need traditional conditioners which trap in water and only increase the risk of damage and breakage. You can then style as usual.

You guys ask me ALL THE TIME about my favorite hair products. Well, this hair system blew me away! Not only did my hair look silky, smooth, and full after one use, but I loved the fact that I was protecting my hair from the inside out, the same way I protect my skin from the inside out. The time saving quality as a busy working mom is also a huge bonus! I loved the products so much that I decided to partner with the brand to help spread the love!



It seems so basic — washing our hair.

We follow our standard shampoo-conditioner protocol without giving it a second thought. Then, when we notice issues with the health and appearance of our hair, we search for styling/smoothing products to temporarily “treat” the issue we see (dryness, breakage, dullness).

But, what if the root of the problem was how we were washing our hair in the first place? Intrigued? Keep reading!

Water Fatigue and Hair Damage:

I’ve been reviewing science and studies about a theory called “water fatigue.” The concept is that wet hair is weak hair. This is how it works – when your hair absorbs water, the inside core of the hair strand swells, pushing open the protective hair cuticle. This weakens your hair strands, leaving them vulnerable to breakage (from combing, wet brushing, hair towels, blow drying). The result? You see frizz, damage, tangles and dullness.

So, if wetting our hair in the first place is causing damage, what is the solution?

Innovation in Hair Care: Pre-Treat Your Hair Before it Gets Wet!

When I first heard about a new, disruptive product to pre-treat your hair before you even step foot into the shower, I was really excited to try it. I love the concept of protecting and strengthening your hair from the inside out.

The brand that took the lead on this innovation in hair care is AQUIS, which has long been one of my favorite hair care brands. (I have used their protective hair towels and turbans for years and years. More on that later). They created a pre-wash spray with coconut oil (which helps to lessen your hair’s water intake by up to 44%), strengthening amino acids like cysteine and keratin, and avocado oil (to hydrate and protect). You spray this product on your dry hair before you get into the bath or shower, in order to prime and protect your hair before you wash. To learn more about the AQUIS PRIME Water Defense PreWash and my experience as an early tester of this product, click here.

Why Juicy Bubbles and Lathering Aren’t Helping Your Hair

There’s more to this innovation in hair washing strategy. Now that we have addressed water fatigue, the next issue is our love for lathering. We all love to lather our hair. We feel like when we are really lathering our hair with all those juicy bubbles, we are thoroughly cleansing it. In fact, the more suds and bubbles, the more damage the shampoo is doing to your hair. The detergents that give you those foamy bubbles are the same detergents that are damaging the hair shaft.  Detergent is actually an overachiever when it comes to cleansing your hair, stripping your hair and scalp of the healthy oils and natural protective barrier while irritating your scalp and prompting your skin to produce even more oil to compensate for its loss.

I always explain to my patients that we are obsessed with over-cleansing and over-exfoliating our skin to our detriment. We need gentle products that protect our skin’s natural barrier. The same concept applies when it comes to hair care. We want replace our harsh cleansers with gentle, clean products formulated to cleanse our hair without damaging the fragile cuticle — the outermost layer of the hair. When your hair cuticle is smooth and uniform, your hair looks shiny.  When light reflects off of the smooth surface, your eye registers that reflection as shiny and healthy hair!

One product I’m loving in this space is the AQUIS Prime Rebalancing Hair Wash. This breakthrough four piece system doesn’t have any of those harsh detergents. Instead, it is extremely gentle and helps to balance your hair and scalp’s healthy pH. If that pH is off, you can experience hair breakage and damage. This wash is specifically formulated to help to maintain your hair’s healthy moisture (including natural oils) and to maintain the strength and integrity of your hair’s cuticle. I especially love that the AQUIS Prime hair care system is one of only 10 haircare brands to be certified clean by Sephora.

I also love the AQUIS PRIME Restorative Leave-In Conditioner. Made with avocado oil, aloe extract, strengthening amino acids and even a UV light absorbing agent to protect your hair from UV damage, this lightweight mist is hydrating and nourishing without any hint of grease. It’s especially key to note that you no longer need traditional conditioners which trap in water and only increase the risk of damage and breakage.

I featured this whole line of products on my Dr. Whitney’s Picks page because I love it and I use it myself. Everyone compliments my hair – it’s shiny, healthy, strong – and as a media expert, my hair is styled SO MUCH (think blow dryers, teasing, and curling irons!). I need to use only the best and most effective products to protect my hair’s health.

My Beloved Lightweight Hair Towels:

I am always talking about these AQUIS hair towels. I have used them for years. My daughter uses them – my entire family uses them. I have thick, heavy hair. I have very little personal time in between working as a dermatologist, appearing on national television as a media expert, and snuggling my 7 year old as much as she will let me (in addition to the other things we do as a family!).

From reading this post, you already know wet hair is fragile hair. So, it stands to reason that rubbing/friction with a regular towel frays your hair cuticle, which is already in a vulnerable state due to water fatigue.  When you use a hair towel or turban like the ones by AQUIS, you are using a towel that’s specifically designed to dry your hair quickly and gently. You will see less frizz and damage. These towels use exclusive technology made from a proprietary fabric that wicks away water with zero friction.  You can see the difference in the visual below!

AQUIS towels cut drying time by 50% and quickly bring hair from wet to damp (at the most critical point to protect your hair) so there’s less blow drying and less breakage. This allows you to preserve your heat adding tools just for styling purposes, which also helps to protect the health of your hair.

I know you will want to know more about this whole hair care system, so click right here to read my Dr. Whitney’s Picks page post about it. Your healthy, shiny, strong hair will thank you!


Dr. Whitney


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