20 Best System 4 Hair Serum [2024]

Are you looking for the best System 4 Hair Serum? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling System 4 Hair Serum.

We Recommended:

# Preview Product
1 Nioxin System 4 Scalp & Hair Treatment, Color Treated Hair with Progressed Thinning, 3.4 oz Nioxin System 4 Scalp & Hair Treatment, Color Treated Hair with Progressed Thinning, 3.4 oz
2 Nioxin System Kit 4, Color Treated Hair with Progressed Thinning, Full Size (3 Month Supply) Nioxin System Kit 4, Color Treated Hair with Progressed Thinning, Full Size (3 Month Supply)
3 Nioxin Night Density Rescue, Overnight Leave-in Treatment, Antioxidant Serum for Hair Density and... Nioxin Night Density Rescue, Overnight Leave-in Treatment, Antioxidant Serum for Hair Density and...
4 Grande Cosmetics GrandeLASH-MD Lash Enhancing Serum,4 ml - 6 Month Supply Grande Cosmetics GrandeLASH-MD Lash Enhancing Serum,4 ml - 6 Month Supply
5 Olaplex Hair Perfector No 3 Repairing Treatment Olaplex Hair Perfector No 3 Repairing Treatment
6 Nioxin System 4 Scalp Therapy Conditioner, Color Treated Hair with Progressed Thinning, 16.9 oz Nioxin System 4 Scalp Therapy Conditioner, Color Treated Hair with Progressed Thinning, 16.9 oz
7 Naturelle Nutri-Ox Treatment for Extremely Thin Hair, 4 Fl. Oz. Naturelle Nutri-Ox Treatment for Extremely Thin Hair, 4 Fl. Oz.
8 PURA D'OR Hair Thinning Therapy Energizing Scalp Serum Revitalizer (4oz) with Argan Oil, Biotin,... PURA D'OR Hair Thinning Therapy Energizing Scalp Serum Revitalizer (4oz) with Argan Oil, Biotin,...
9 Moroccanoil Treatment, 3.4 Fl. Oz., Orginal Moroccanoil Treatment, 3.4 Fl. Oz., Orginal
10 Nioxin Hair Regrowth Treatment for Women with Minoxidil 2%, 3 Month Supply, 6 oz Nioxin Hair Regrowth Treatment for Women with Minoxidil 2%, 3 Month Supply, 6 oz
11 iRestore Professional Laser Hair Growth System - FDA Cleared Laser Cap Hair Growth for Men & Hair... iRestore Professional Laser Hair Growth System - FDA Cleared Laser Cap Hair Growth for Men & Hair...
12 Design Essentials Professional Grade Silk Essentials Heat Protectant Strengthening Serum For Relaxed... Design Essentials Professional Grade Silk Essentials Heat Protectant Strengthening Serum For...
13 Nioxin System Kit 3, Color Treated Hair with Light Thinning, Full Size (3 Month Supply) Nioxin System Kit 3, Color Treated Hair with Light Thinning, Full Size (3 Month Supply)
14 Olaplex No.7 Bonding Oil, 30 ml Olaplex No.7 Bonding Oil, 30 ml
15 Nioxin Diamax Advanced Hair Thickening Treatment, 3.38 oz Nioxin Diamax Advanced Hair Thickening Treatment, 3.38 oz
16 Nioxin System 4 Cleanser Shampoo, Color Treated Hair with Progressed Thinning, 33.8 Fl Oz (Pack of... Nioxin System 4 Cleanser Shampoo, Color Treated Hair with Progressed Thinning, 33.8 Fl Oz (Pack...
17 iRestore Essential Laser Hair Growth System - FDA Cleared Hair Growth for Men & Hair Loss Treatments... iRestore Essential Laser Hair Growth System - FDA Cleared Hair Growth for Men & Hair Loss...
18 Olaplex No.4 Bond Maintenance Shampoo, 8.5 Fl Oz Olaplex No.4 Bond Maintenance Shampoo, 8.5 Fl Oz
19 iRestore Max Growth Bundle includes the 3-in-1 Hair Growth Supplement, Anti-Hair Loss Serum,... iRestore Max Growth Bundle includes the 3-in-1 Hair Growth Supplement, Anti-Hair Loss Serum,...
20 Design Essentials Natural Agave & Lavender Thermal Protectant Creme 4 Ounce Design Essentials Natural Agave & Lavender Thermal Protectant Creme 4 Ounce
Bestseller No. 1
Nioxin System 4 Scalp & Hair Treatment, Color Treated Hair with Progressed Thinning, 3.4 oz
  • This item is not a Tester
  • Packaging may vary
  • Beauty and personal care product
Bestseller No. 2
Nioxin System Kit 4, Color Treated Hair with Progressed Thinning, Full Size (3 Month Supply)
  • Nioxin System 4 helps you achieve thicker, fuller looking hair and restore moisture balance Award: Behind the Chair Stylist Choice Winner Favorite...
  • Reduces hair loss due to breakage and strengthens the hair, while refreshing the scalp and delivering a healthy shine
  • Complete Professional hair thickening treatment for colored hair with progressed thinning
  • Provides Hair resilience and control moisture balance, as well as a refreshed scalp environment
  • Delivers, thicker, fuller hair by removing follicle clogging sebum, fatty acids and environmental residues.Follow Suggested Use for Best Results: Step...
Bestseller No. 4
Grande Cosmetics GrandeLASH-MD Lash Enhancing Serum,4 ml - 6 Month Supply
  • GrandeLASH-MD Lash Enhancing Serum, Promotes Appearance of Longer, Thicker Eyelashes, Cruelty Free
Bestseller No. 5
Olaplex Hair Perfector No 3 Repairing Treatment
  • Repairs damaged and compromised hair, strengthens and protects hair structure, restores healthy appearance and texture
  • Apply a generous amount from roots to ends on unwashed towel-dried hair.
  • Comb through once and leave on for a minimum of 10 minutes or more. Rinse from hair, shampoo, and condition.Healthy hair
  • Use by date: This product’s use by date is determined by the Period After Opening symbol. The Period After Opening symbol is marked by a box with a...
SaleBestseller No. 6
Nioxin System 4 Scalp Therapy Conditioner, Color Treated Hair with Progressed Thinning, 16.9 oz
  • Moisturizes and energizes hair without adding weight
  • Safeguards scalp from drying irritation of chemical services
  • Provides soothing essential oils, anti-oxidants and enzymatic complexes
SaleBestseller No. 8
PURA D'OR Hair Thinning Therapy Energizing Scalp Serum Revitalizer (4oz) with Argan Oil, Biotin,...
  • CLINICAL POWER. Clinically tested formula with many great benefits including reduce hair thinning due to breakage and increases volume.
  • HELPS HAIR THINNING NATURALLY. Stimulating blend of 16 Key Active Ingredients including Niacin, Biotin, Argan Oil, antioxidants and other natural...
  • GET TO THE ROOT OF THE PROBLEM. It all starts with a healthy scalp. This invigorating blend of extracts and essential nutrients fortifies and...
  • GENTLE YET EFFECTIVE. Ultra-nourishing blend of premium oils and antioxidants specially formulated to effectively treat thinning, damaged, and/or...
  • SCIENCE PLUS NATURE. All PURA D’OR formulas combine science and nature to deliver transformative hair therapy. No SLS (Sulfates). No Parabens. No...
Bestseller No. 9
Moroccanoil Treatment, 3.4 Fl. Oz., Orginal
  • 3.4 oz
  • Has Argan oil
  • No Alcohol
Bestseller No. 10
Nioxin Hair Regrowth Treatment for Women with Minoxidil 2%, 3 Month Supply, 6 oz
  • It is a comprehensive treatment and care product
  • It contains minoxidil
  • It effectively helps hair growth to all types of hairs
Bestseller No. 11
iRestore Professional Laser Hair Growth System - FDA Cleared Laser Cap Hair Growth for Men & Hair...
  • The iRestore Professional Laser Hair Growth System is designed with an industry leading 282 lasers and LEDs (1410 mW total power output) to help treat...
  • 6-Month Money Back Guarantee - iRestore's low-level laser light therapy technology in the all new Pro is the safest and most effective way to restore...
  • The iRestore Pro hair growth system provides maximum scalp coverage competitor devices don't offer. It uses advanced laser and red light technology at...
  • Unlike laser combs, laser banks or brushes that provide far less coverage and require constant hand movement, the iRestore Pro hair growth system...
  • In a clinical study conducted by a board-certified dermatologist, the FDA-cleared iRestore laser hair growth system resulted in 100% of men and women...
SaleBestseller No. 12
Design Essentials Professional Grade Silk Essentials Heat Protectant Strengthening Serum For Relaxed...
  • PROTECTS AGAINST HEAT DAMAGE - This lightweight heat protectant and strengthening serum provides immense protection against permanent curl elongation...
  • STRENGHTENS & SMOOTHS THE CUTICLE - Formulated with 17 amino acids, which serve to strengthen damaged hair and smooth the hair shaft while improving...
  • PREMIUM QUALITY FORMULA- Enriched with professional grade Silk Proteins and minerals for salon quality performance with as little as 1-4 dime size...
  • GREAT FOR ALL HAIR TEXTURES – Our non-greasy, lightweight formula can be used on all hair types and textures (wet or dry) without weighing down your...
Bestseller No. 13
Nioxin System Kit 3, Color Treated Hair with Light Thinning, Full Size (3 Month Supply)
  • Nioxin System 3 leaves hair thicker, denser looking and with a vibrant color Award: Behind the Chair Stylist Choice Winner Favorite Thinning Haircare,...
  • Stregthens hair resilience against damage and breakage while providing hair control moisture balance
  • Complete Professional hair thickening treatment for colored hair with light thinning
  • Nioxin system kit 3 for colored treated with light thinning hair increases the fullness of each hair strand
  • Helps remove follicle clogging sebum, fatty acids and other environmental residues
Bestseller No. 14
Bestseller No. 15
Nioxin Diamax Advanced Hair Thickening Treatment, 3.38 oz
  • Diameter boosting & hair breakage protection, for thicker, fuller hair.
  • Boost your existing hair diameter instantly.
  • Penetrates hair and makes it fuller and more manageable.
  • Thicken existing hair at the roots.
  • Protects hair against breakage, allowing it to grow longer* (*with daily use).
Bestseller No. 16
Nioxin System 4 Cleanser Shampoo, Color Treated Hair with Progressed Thinning, 33.8 Fl Oz (Pack of...
  • PROFESSIONAL HAIR AND SCALP CLEANSER SHAMPOO for color treated hair with progressed thinning Award: Behind the Chair Stylist Choice Winner Favorite...
  • MOISTURIZES AND CLEANSES DRY SCALP and chemically treated hair for thicker, fuller looking hair
  • REMOVES follicle clogging sebum, fatty acids, and environmental residues from hair and scalp with Activ Renewal technology
  • PREPARE HAIR AND SCALP for a complete hair thickening treatment with Nioxin's three part System 3 Cleanser for Color Treated Hair with Light Thinning
  • NIOXIN SHAMPOO CLEANSER is the first step of a three part Nioxin regimen, designed to strengthen the hair and amplify hair structure
SaleBestseller No. 17
iRestore Essential Laser Hair Growth System - FDA Cleared Hair Growth for Men & Hair Loss Treatments...
  • iRestore Laser Hair Growth System is a FDA-cleared hair loss treatment and laser hair growth device for treating alopecia, receding hairline, balding...
  • 6-Month Money Back Guarantee – Users can expect to see visible hair improvement in as little as 3 to 6 months (results may vary). If you don’t see...
  • iRestore has been clinically studied by doctors and has been proven to promote hair growth for men and women in a recent 2017 research study. In this...
  • Whether you're a man or a woman, you can grow thicker, fuller, and healthier hair fast with iRestore's clinical-strength laser hair restoration...
  • Developed in GMP-certified facilities, this home-use laser hair growth cap is durable, lightweight, comfortable, hands-free and easy to use. This is...
Bestseller No. 18
Olaplex No.4 Bond Maintenance Shampoo, 8.5 Fl Oz
  • It is formulated with olaplex bond building chemistry
  • It restores internal strength and moisture levels to add incredible shine and manageability
  • It is recommended for all hair types
Bestseller No. 19
iRestore Max Growth Bundle includes the 3-in-1 Hair Growth Supplement, Anti-Hair Loss Serum,...
  • The iRestore Max Growth Bundle is a comprehensive system of premium hair growth products that fight hair loss & thinning hair for both men and women....
  • Anti-Hair Loss Serum – The primary ingredient, Redensyl, is a clinically proven biotechnology that reactivates hair stem cells and proliferates cell...
  • 3-in-1 Hair Growth Formula – Contains Biotin, Saw Palmetto & DHT Blocker; this proprietary formula is made of essential ingredients that have been...
  • Anti-Hair Loss Shampoo – This powerful hair rejuvenation shampoo is designed for men and women with balding, thinning hair, and receding hair line....
  • Anti-Thinning Conditioner – Infused with Biotin, Argan Oil, Amino Acids, Antioxidants, and Plant-Based Keratin, this unique formula gently...
Bestseller No. 20
Design Essentials Natural Agave & Lavender Thermal Protectant Creme 4 Ounce
  • Effective heat protection up to 420 degrees
  • Protects against reversion due to humidity
  • Lacquer shine and long-lasting style
  • Provides superior protection for the next level of thermal styling
  • Works especially well on dry, medium to coarse hair

Having trouble finding a great System 4 Hair Serum?

This problem is well understood by us because we have gone through the entire System 4 Hair Serum research process ourselves, which is why we have put together a comprehensive list of the best System 4 Hair Serums available in the market today.

After hours of searching and using all the models on the market, we have found the best System 4 Hair Serum for 2023. See our ranking below!

How Do You Buy The Best System 4 Hair Serum?

Do you get stressed out thinking about shopping for a great System 4 Hair Serum? Do doubts keep creeping into your mind?

We understand, because we’ve already gone through the whole process of researching System 4 Hair Serum, which is why we have assembled a comprehensive list of the greatest System 4 Hair Serum available in the current market. We’ve also come up with a list of questions that you probably have yourself.

John Harvards has done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for System 4 Hair Serum that you consider buying. Your questions might include the following:

  • Is it worth buying an System 4 Hair Serum?
  • What benefits are there with buying an System 4 Hair Serum?
  • What factors deserve consideration when shopping for an effective System 4 Hair Serum?
  • Why is it crucial to invest in any System 4 Hair Serum, much less the best one?
  • Which System 4 Hair Serum are good in the current market?
  • Where can you find information like this about System 4 Hair Serum?

We’re convinced that you likely have far more questions than just these regarding System 4 Hair Serum, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for System 4 Hair Serum, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible System 4 Hair Serum. Make sure that you are only using trustworthy and credible websites and sources.

John Harvards provides an System 4 Hair Serum buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information.

How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available System 4 Hair Serum currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

  1. Brand Value: Every brand of System 4 Hair Serum has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
  2. Features: What bells and whistles matter for an System 4 Hair Serum?
  3. Specifications: How powerful they are can be measured.
  4. Product Value: This simply is how much bang for the buck you get from your System 4 Hair Serum.
  5. Customer Ratings: Number ratings grade System 4 Hair Serum objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their System 4 Hair Serum.
  7. Product Quality: You don’t always get what you pay for with an System 4 Hair Serum, sometimes less, and sometimes more.
  8. Product Reliability: How sturdy and durable an System 4 Hair Serum is should be an indication of how long it will work out for you.

John Harvards always remembers that maintaining System 4 Hair Serum information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

If you think that anything we present here regarding System 4 Hair Serum is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly!

Related Post:

FAQ:

Q: What is hair serum—and do you need it?

A: Similarly, hair serum is any light, liquid styling product that gives your hair a boost of nourishment and finesse. “Serums are a very effective means of adding moisture and nutrients to hair [while] sealing it off so it can repel humidity and fight frizz ,” notes renowned session stylist and product developer Kevin Murphy.

Q: What is the best serum for damaged hair?

A: This Kérastase serum dispenses oil and cream formulas from a dual-chamber bottle that mix together before application. The concoction slides effortlessly into towel-dried hair to bring vitality back to brittle strands. GH Beauty Lab scientists confirmed that this serum made damaged hair smooth and silky without weighing it down.

Q: What is the best serum for frizzy hair?

A: Best for Frizzy Hair: Sachajuan Shine Serum. Buy On Dermstore. One of the most popular uses of hair serum is taming frizz, and this hair serum does that masterfully. It smooths frizz, leaving you with ultra-sleekness, thanks to dimethicone, which coats each strand to fill in any ridges.

Q: What is the best serum for dry ends?

A: If your hair has a mind of its own (aka it never lies down flat), try out this hair serum from John Frieda. It has silk protein and seaweed extract to smooth out your hair, fight the effects of humidity, and deal with any unwanted flyaways and frizz. Let’s face it—no one wants to deal with dry ends.