🥇Top 10 Hair Growth Serum in 2021

This list is a compilation of our personal favorites, reader recommendations, and top sellers from the Facentials store to make a list for the 10 best car air fresheners reviewed in 2021.

Today there are hundreds of car air fresheners to choose from. And we know how there are different factors people judge a product on.

So, after trying dozens and dozens of them, we were able to break them down to our top 10 best charcoal supplements in 2021.

*Note*: This content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.

🥇Top 10 Hair Growth Serums in 2021

1. Pure Research Hair Growth Serum

Features & Benefits

• Over 6,253+ Positive Reviews
• SUPERIOR ABSORPTION: The highest concentration of liquid drops available, 10000mcg in just 0.5ml, resulting in increased absorption compared to pills, capsules, and other liquid drops.
• NATURAL SUPPLEMENTATION: Helps support healthy hair, skin and nails. In addition, Biotin can improve digestive health and glucose tolerance and is important for regulating cardiovascular and cognitive health. *
• 60 HIGHLY DOSED SERVINGS – Take advantage of our premium grade biotin produced in a registered and GMP state-of-the-art facility, made right here in the USA. We go above and beyond to produce the purest and most effective supplementation
• RICH AND SMOOTH FLAVOR: Mixed Berry Flavor. Goes down smooth and tastes great! Pure Research Biotin supplement is vegan friendly. This formula contains NO gluten, soy, sugar, milk, yeast, salt, or wheat.

Testimonial

"My husband had a terrifying barbecue accident that left most of his facial hair vaporized, and part of the hair on his head burned. Thank god his skin wasn't burned, I feel he was really lucky. We wanted to make sure his hair would grow back quickly, so we bought a bunch of topical products plus shampoos with biotin. They really didn't seem to be very effective. Then, we decided to go straight to the source, pure biotin. My husband rubs biotin topically on his eye brows, and then after, he swallows about half a dropper as suggested. His progress has been astonishing. I was really worried his hair wouldn't come back but thank god everything will be back to normal soon." - Debra 

2. Pronexa Hair Growth Serum

Features & Benefits

• Over 400+ Positive Reviews
• Scientific research on hair loss has shown that the number one factor in hair loss and thinning hair is the production of dihydrotestosterone or DHT. Propidren’s revolutionary formula contains clinically proven Topical DHT blockers that work synergistically to stop hair loss and help regrow and thicken hair. Works for both men and women!
• Contains Saw palmetto that helps prevent DHT production - Saw Palmetto is essential to blocking 5-alpha-reductase, an enzyme that converts testosterone to DHT. DHT is a molecule inside of your body that's responsible for hair loss, so prohibiting the production of this hormone is key to preventing hair loss. Saw Palmetto is clinically proven to help stop hair loss both orally and topically.
• Also includes Biotin to help strengthen weak and brittle hair - Biotin is a B Vitamin that produces keratin, increases hair elasticity (minimizing breakage), and wraps your hair in a protective layer to prevent it from becoming brittle and weak. Biotin helps to induce growth of both your hair and new skin cells, making them healthy and vibrant.

Testimonial

"Great product and yes it does work. I use this in combination with the Propidren Supplements. When I use this product I use the dropper & go into my two strand twist & braids & then massage the product into my scalp. It feels like it's giving me a mild stimulation to my scalp. MY hair has made such a turn around. I am so happy. I am 60+ & the products have worked wonderfully. I just wished the bottle was bigger bcuz the product doesn't last me for a month. The supplements work great as well. You can read my full story under the Propidren Supplements. These are the ONLY PRODUCTS THAT HAVE WORKED FOR ME. I have spent hundreds of dollars on products trying to save my hair. I truly believed I was going bald. I came upon these products through prayers. Try the products for yourself. Give them a chance. Bear in mind that everyone is different. One person may see an improvement w/I a month . I was near the end of the second month. I didn't obsess bcuz I didn't think it was going to work anyway. But it does. It really does. No, I have not received any free product for this review. My review is to help guide those that may think all the reviews are fake. I will continue to order. I am hoping that they do not change the ingredients. So glad GOD answered my prayers. Losing hair is devastating & scary. It affected my self-esteem & my appearance. It brought on a feeling of helplessness. It is WONDERFUL when a product does what it is suppose to do. It is also SURPRISING. YOU have nothing to lose by trying this product except MORE HAIR. It has worked for me & I am truly grateful. Thanks Hairgenics for the great products." - Jus Cruizing

3. Boldify Hair Growth Serum

Features & Benefits

• Over 1,200+ Positive Reviews
• HAIR LOOKS AMAZING, EVEN AFTER FIRST APPLICATION – 100% NATURAL HAIR GROWTH COMPLEX, non-greasy, BIOTIN INFUSED volumizing hair growth serum for women and men instantly absorbs deep into your follicles, sealing their exterior with advanced thermal protection coating, while nourishing from the inside out, adding volume and shine, so you achieve the perfect blow out and promote faster hair growth, without damaging the hair you already have. No harmful additives, alcohols or sulfates required!
• FALLING, BREAKING, SLOW GROWING HAIR? Hair regrowth treatment for women and men promotes fast restoration better than hair growth spray. The more you use Boldify 3X Hair biotin oil hair treatment, the faster you’ll promote longer, stronger, thicker, shimmering hair. And because it SMELLS DELICIOUS, you’ll love using it every day!

Testimonial

"Ok- so I have bought other products in this line, and really liked them for the most part overall. They are great at imparting volume. But this stuff really is incredible- I think it is the best one of all their products. It not only imparts volume, but it makes the hair shaft smoother, and I would believe that with prolonged use it will decrease breakage. It also smells really good. I now use this stuff every morning. I have curly hair, so I put a dab on my hands, and run it from scalp/roots to ends. It restores curl, decreases frizziness (possibly by coating the hair shaft?), and adds volume...and smells great. This is now an everyday product, and it appears to be the only product that I need. I am going to order more as soon as I start to run low. This may be the only product that you need.
I will admit that I was skeptical at first. There are a lot of these serum products on the market. But after using this I cannot imaging NOT using it. I will be curious to see if it make a significant difference in the long run with increasing growth and decreasing breakage. But it has been so good for me that even if it didn't, I would still buy it for the immediate effects, and improved overall hair condition and appearance. Great product." - Otto1297

4. Ultrax Labs Hair Growth Serum

Features & Benefits

• Over 2,800+ Positive Reviews
• Instantly Thicken Hair with Advanced Leave In Caffeine Thickening Serum
• Re-Activate and Jump Start Hair Follicles to Grow Healthy Hair Again
• Highly Effective Leave In Caffeine Hair Stimulation Treatment
• Ads fullness and body to thinning hair. Safe and Effective for both men and women
• Boosts and Speeds up Production of New Hair Growth.

Testimonial

"A friend of mine was using this system with the shampoo and she let me try it when I was at her house. I'd heard about washing your hair in coffee and was like, no way I'm doing that. I don't have time for putting weird stuff in my hair. But her results were really good. She'd been using the same shampoo as me, by Matrix and she said her hair was falling out. I thought it was probably just more apparent because it was smoothing shampoo, and maybe that's true but since she started using this caffeine stuff, her hair is definitely coming in thicker. And my hair started getting thinner than it used to be. I had really thick hair when I was younger but around 40 I could see scalp when I pulled it up. So I started using this too. For one thing, it's really easy to use. After the shampoo, I rub this into my scalp especially around the hairline and part, and it's tingly and then after a few seconds feels like nothing. I can use it twice a day and there's no buildup, which is good because I only wash my hair two or three times a week. My mom is trying it now. She's got good hair, but I think this is good for anyone who wants to keep their hair thick, not just people who are stressed about losing their hair, as long as you have the money. It's kind of expensive, but so are all the rest of my beauty products. Make it last longer by making sure you hit the scalp and focus on the areas that are most apparent." - Mandalyn Echols

5. Dr. Davey Hair Growth Serum

Features & Benefits

• Over 13+ Positive Reviews
• PREVENT HAIR LOSS : Hair growth serum can provide the nutrients needed for hair ,improve the growth environment thereby reduce further hair loss and strengthen hair roots. This powerful remedy protects and nourishes hair to reduce further hair loss and breakage.
• PROMOTE HAIR GROWTH: Our hair growth oil can promote blood circulation and metabolism of the scalp,nourish hair roots, awaken hair follicles and stimulate hair follicles to grow more healthy hair, accelerating thick hair growth and enhancing the tightness, density and elasticity of the hair.
• NATURAL INGREDIENTS: Contains ZINGIBER OFFICINALE (GINGER) ROOT OIL and a variety of Chinese herbal plant extracts , tocopherol (vitamin E) and antioxidants.This exclusive hair growth serum make hair soft and smooth, hair becomes dense and supple after a few uses, locking in nourishment and making hair healthier, damage-free and reduce shedding, promote the healthy development of hair and scalp.

Testimonial

"Got this for my dad who is having hair loss. I checked the ingredients and it looked safer than some of the bigger name brands one, so decided to give it a try. We didn't have high hopes, but I was mostly worried about any possible reactions he might have (we tried another product a while back that gave him a rash!). This one had no problems, and we feel like he is actually losing less hair than before (noticing less in the shower, when he combs, etc). Will keep trying it!!" - Mary

6. EssyNaturals Hair Growth Serum

Features & Benefits

• Over 1,900+ Positive Reviews
• HEALTHIER & FULLER HAIR - Our nourishing formula strengthens thinning and weak hair resulting in noticeably thicker, fuller and healthier hair. Hair becomes smoother and shinier with less frizz and breakage.
• IMPRESSIVE HAIR GROWTH - Essy Beauty Hair Growth Oil is packed with vitamins, antioxidants and nutrients that effectively stimulate stronger and faster hair growth on both men and women.
• TOP QUALITY POWER INGREDIENTS - All natural and pure ingredients Castor Oil, Caffeine, Rosemary Oil and Biotin blend harmoniously to create a magical formula. Castor Oil is filled with omega 6 essential fatty acids, minerals, proteins, and vitamin E and has natural anti-bacterial, anti-fungal properties to promote healthier and stronger hair. Caffeine compounds stimulate the hair follicles to speed up hair growth.

Testimonial

"I absolutely love this product! For my whole life, my hair has never grown past shoulder-length or had volume. The first picture (white cardigan) is of me at a wedding in September 2018. My hair is stringy and flat. The second picture (just taken tonight) is of me after using the product for 2 months. My natural curls are bouncy and strong, my hair length is much longer than it has ever been in my life, and not to mention the thickness! I am much more confident with my hair, and I receive comments on it a lot now!

I definitely recommend this product!" - KReich

7. Votala Hair Growth Serum

Features & Benefits

• Over 544+ Positive Reviews
• Votala Hair Growth Serum: It works by naturally activating dormant hair follicle germ tissue on the scalp, promoting rapid growth and nourishment of hair due to its unique organic ingredients. It contains bio-active nutrients essential for hair growth.
• 100% Natural Ingredients: Hair Growth Oil uses ginger, fleece-flower root, angelica, niacinamide, tocopherol (vitamin E), danshen (salvia sclarea) extract. These ingredients promote the healthy development of hair and scalp, resulting in denser and healthier hair.
• Improve the Appearance of Thin Hair: This serum thickens fine hair and helps to balance the oily scalp, increasing hair volume and body as it restores nutrients to hair follicles. Reduce further hair loss and breakage.

Testimonial

"This product brings me so many surprises! At first, I thought it would be very stringy and the smell would be foul. However, when I received it, I found that it had a clear form and a very pleasant aroma of herbs. I tried it and my scalp absorbed it very fast, not stingy at all! To my surprise, the effect is very obvious and good! After using it for a while, I can see clearly that my hairline where the hair used to be thin starts to grow new hair! My scalp is not that itchy and oily any more!" - Amose

8. Toullgo Hair Growth Serum

Features & Benefits

• Over 437+ Positive Reviews
• Hair Growth Serum: Hair Growth Serum contains essential bio-active nutrients that improve the hair and scalp condition,creating a healthy environment for Hair growth.
• Applicable Hair Symptoms: slow hair growth, hair urgent need to grow, inelastic, hair tangled dull, easy to break, rough and unruly, not supple.
• Natural Hair Groeth Serum With Biotin Oil - Stimulates & nourishes hair follicles. Designed to revitalize, strengthen and protect. For restoration, stronger, thicker & long lasting hair.

Testimonial

"I got this oil for my husband as he is moving from hair loss to patches of baldness now, so thought of getting a serum before he gets completely bald.
This oil is not thick as some of the oils out there,no scent so you can go to work without people noticing you have something in your hair.
The good thing is it comes with a dropper so you know where to target the serum and have best results. It's been some time that my husband is religiously putting this oil in hair and ingave already seen some new hair popping in his bald patches." - Piya

9. TruePure Hair Growth Serum

Features & Benefits

• Over 316+ Positive Reviews
• BIOTIN FOR HAIR GROWTH - This hair serum is infused with premium grade Biotin for its healthy hair growth and hair loss prevention properties. Men and women with thin looking hair can benefit from this natural DHT blocker.
• HAIR SERUM FOR ALL HAIR TYPES - Unlike other hair treatments that can be used on certain hair types, this Biotin Serum is perfect for everyone in the family and is safe on all hair types - normal, dry, oily, color treated, damaged or ethnic.
• FRAGRANCE FREE - TruePure Biotin Serum is naturally formulated without added synthetic perfume agents that can irritate the scalp and increase the rate of hair loss and hair thinning.

Testimonial

"So far so good and strong! I’ve only been using the biotin serum spray for about two weeks but my hair is noticeably stronger. I was interested in this product because I’m trying to grow my edges back to their full potential. I’ve been guilty of excessive ponytails and braiding and that has left my edges weak and thin.
I’ve definitely noticed my hair stronger and slightly fuller and my hair feels strong and soft at the same time. No residue or greasy feeling so easy to style as usual. It will be interesting to see what happens in the next couple of weeks. I’m happy to see any improvement!" - N.S.

10. NutraChamps Hair Growth Serum

Features & Benefits

• Over 284+ Positive Reviews
• GREAT TASTE & GREAT BENEFITS - With 10,000 mcg of pure biotin in each serving, NutraChamps’ biotin drops deliver the highest potency and most effective dose of biotin that you’ll find. Enjoy all the amazing benefits of biotin right from a convenient, great tasting dropper — with no tough pill to swallow. Designed for practical and easy on-the-go supplementation for men, women, and children.
• DELICIOUS & SUGAR-FREE - These sugarless and tasty biotin drops are fantastic — just like your hair, skin and nails will look after just a couple weeks of use. Longer, stronger, and healthier hair are at the forefront of the famous benefits of biotin, but it’s incredible impacts on skin and nails will also be a highlight that you’ll definitely notice! Start enjoying today and you can thank us later!
• HEALTHIER HAIR, SKIN & NAILS - Caring for your hair, skin and nails is not just about what kind of products you use on the outside, but also about what nutrients you put into the inside of your body. NutraChamps’ biotin helps you address an internal vitamin deficiency so that you can have stronger nails, tighter, glowing skin and thicker, fuller, and healthier hair!

Testimonial

"I get dry skin during the cold weather months. I've tried other Biotin products in the past with average results. I started taking these Biotin drops and my skin has gotten noticeably less dry and brighter I guess you could say. Also with drops you never know what kind of taste you're going to be getting. These drops taste great. I was shocked! My hair seems to be growing faster and looks great too. I appreciate this product coming in drops form, because I get the best results with products in that form. This is a fantastic product, I highly recommend." - R. Feikle

Get Your PDF on Charcoal Detox