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Strengthening Hair Serums

Best Strengthening Hair Serums of 2026

Name: Kérastase Sérum Thérapiste for Damaged Hair
Brand: KÉRASTASE

Charlotte Powell

Last Updated: 11 Feb 2025

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Strengthening hair serums are a popular hair care product designed to improve the overall health and appearance of hair. These serums typically contain a blend of nourishing ingredients such as vitamins, minerals, and natural oils that work together to strengthen hair strands, prevent breakage, and promote healthy hair growth. They are easy to apply and can be used on all hair types, making them a versatile addition to any hair care routine. Whether you are looking to combat hair loss, add shine and volume to your hair, or simply improve the overall health of your locks, a strengthening hair serum may be just what you need.

At a Glance: Our Top Picks

#TOP 1

Kérastase Sérum Thérapiste for Damaged Hair

9.9

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#TOP 2

OGX Anti-Breakage Serum with Coconut Milk

9.8

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#TOP 3

Natural Hair Strengthening Oil Spray with Biotin

9.6

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Top 10 Strengthening Hair Serums

#TOP 1 Best Hair Serum for Damaged Hair

Kérastase Sérum Thérapiste for Damaged Hair

KÉRASTASE
AD696
30 ml (Pack of 1)

Kérastase Resistance, Strengthening & Healing Serum with Heat Protection, For Over-stressed & Very Damaged Hair, With Fibra-Kap, Sérum Thérapiste, 2x15ml

The Kérastase Sérum Thérapiste is expertly formulated to strengthen and heal overstressed and very damaged hair. With its unique blend of oil and cream, enriched with Fibra-Kap technology, this serum encourages new hair fibre growth while deeply moisturising your locks. You will notice a remarkable repair of split ends from the very first application, and it offers heat protection up to 230°C, ensuring your hair remains safe during styling. Simply apply it from mid-length to the tips of your hair for optimal results.

9.9

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What We Like

Strengthens damaged hair fibres
Moisturises and repairs split ends
Heat protection up to 230°C
Convenient application method

#TOP 2 Best Nourishing Hair Serum

OGX Anti-Breakage Serum with Coconut Milk

OGX
4091008
118 ml (Pack of 1)

OGX 91008 Anti-Breakage Serum Nourishing Coconut Milk, Paraben and Sulfate Free, Sustainable Ingredients, Strengthening, Protective, Hydrating, 4 Ounce Pump Bottle

The OGX Coconut Milk Serum is designed to strengthen and hydrate your hair with its unique blend of coconut milk, coconut oil, and egg white proteins. This luxurious formula helps to smooth and condition your hair, making it more resilient to daily styling. By wrapping each strand in a protective layer, it enhances your hair's natural shine and elasticity. With OGX's commitment to sustainable ingredients, you can indulge your hair while being environmentally conscious.

9.8

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What We Like

Strengthens and hydrates hair
Protects against daily wear
Contains sustainable ingredients
Enhances natural shine
Lightweight and non-greasy

#TOP 3 Best Hair Serum Spray

Natural Hair Strengthening Oil Spray with Biotin

Creip
HF2408
Clear
60 ml (Pack of 1)

Natural Hair Strengthening Oil Spray: Batana Oil Rosemary Infused Biotin Caffeine Enriched - Moisturizing Thickening Serum for Scalp and Hair Care - For All Hair Types Women and Men 2 FL OZ

The Creip Hair Strengthening Serum is a lightweight and non-greasy formula that nourishes your hair with Batana Oil, Rosemary, Biotin, and Caffeine. This powerful blend helps to strengthen your hair, leaving it looking fuller and healthier. It also moisturises and revitalises your scalp using essential oils and plant extracts like Lavender and Peppermint, creating a balanced environment for vibrant hair. Additionally, the serum features Hydrolyzed Rice Protein and Silk, which enhance volume and softness, improving your hair's overall texture.

9.6

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What We Like

Strengthens and nourishes hair
Moisturises and revitalises scalp
Enhances volume and softness
Suitable for all hair types
Fragrance-free and easy to use

#TOP 4 Best Smoothing Hair Serum

TRESemmé Lamellar Shine Leave-In Cream Serum

TRESemmé
Black & Gold

TRESemmé Lamellar Shine Leave-In Cream Hair Serum with patented Lamellar Technology hair treatment for an ultra-glossy salon finish 200 ml

TRESemmé Lamellar Shine Serum is perfect for all hair types, whether wavy, straight, or curly, helping you achieve a stunning salon-grade gloss. Its Lamellar Technology works to smooth and align hair strands, correcting imperfections for a polished finish. With PRO Style Technology, the serum strengthens and manages damaged hair, making it look healthier over time. Each ingredient is carefully selected to ensure your hair receives top-notch care, so you can feel confident in every style you create.

9.4

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What We Like

Ultra-glossy salon finish
Repairs and smooths hair
Strengthens damaged hair
Suitable for all hair types

#TOP 5

Umberto Giannini Grow Long Serum for Hair Strengthening

Umberto Giannini
U167
75 ml (Pack of 1)

Umberto Giannini Grow Long Serum for Hair Strengthening - No Frizz Growth Enhancing Shine Serum 75ml

The Umberto Giannini Hair Serum is designed to strengthen your hair and protect it from breakage. If you struggle with frizz, this serum helps to banish it, leaving your hair smooth and manageable. Additionally, it adds a beautiful shine, enhancing your hair's overall appearance. For those looking to encourage hair growth, this serum accelerates the process, making it perfect for anyone wanting longer, healthier locks.

9.4

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What We Like

Strengthens hair effectively
Banishes frizz
Adds shine
Accelerates hair growth
Vegan and cruelty-free

#TOP 6 Best Hair Serum for Men

Viviscal Hair Thickening Serum with Biotin & Keratin

Viviscal
1140002-A
Clear
50 ml (Pack of 1)

Viviscal Hair Thickening Serum for Naturally Thicker & Fuller Looking Hair, Paraben Free Leave In Conditioner with Biotin, Keratin & Marine Collagen, for All Hair Types, 50 ml

The Viviscal Hair Serum is a lightweight leave-in treatment designed for both men and women. It contains essential hair-building blocks like Biotin and Keratin, along with Marine Collagen and Seaweed extract, which work together to coat each hair strand. This innovative serum not only moisturises and conditions but also helps to control frizz, leaving your hair looking shiny and voluminous. It's paraben-free and non-greasy, making it easy to apply and perfect for styling, ensuring your hair feels healthy and full.

9.3

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What We Like

Contains Biotin and Keratin
Moisturises and conditions hair
Paraben-free formulation
Non-greasy and easy to apply
Suitable for all hair types

#TOP 7 Best Kerastase Hair Serum

Kérastase Genesis Homme Anti-Hair Fall Serum

KÉRASTASE
KER-7495
Genesis
90 ml (Pack of 1)

Kérastase Genesis Homme, Anti-Hair Fall Fortifying Serum, for Weakened & Thinning Hair, With Aminexil, Sérum Anti-Chute Fortifiant, 90 ml

Kérastase Genesis Homme Serum is specially formulated to combat hair loss. Enriched with Aminexil, Ginger Root, and Creatine, this serum strengthens hair at the roots, helping to improve its resistance to breakage. By using this product, you can enjoy reduced hair fall and promote healthier hair. For best results, apply it to your scalp morning or evening for at least six weeks, massaging it in for optimal absorption. This serum is designed to make your hair feel stronger and revitalised.

9.3

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What We Like

Reduces hair fall effectively
Strengthens hair from the roots
Easy to apply
Convenient for daily use

#TOP 8

Kérastase Genesis Hair Serum for Weakened Hair

KÉRASTASE
KF298
Genesis
90 ml (Pack of 1)

Kérastase Genesis Hair Serum, Nourishing & Fortifying Leave-In Conditioner, For Weakened Hair, With Ginger Root & Edelweiss Flower, Sérum Anti-Chute Fortifiant, 90 ml

The Kérastase Genesis Hair Serum is an effective daily treatment designed for those experiencing hair loss and thinning. Enriched with Aminexil, Ginger Root, and Caffeine, it revitalises your hair from the roots, helping to calm and reduce any scalp irritation you may encounter. By strengthening the hair fibre from root to tip, this serum promotes healthy hair growth by activating nutrient microcirculation. Following a simple 30-day treatment plan, you can apply it once daily and style your hair as usual without rinsing.

9.3

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What We Like

Reduces hair loss effectively
Strengthens hair from roots
Calms scalp irritation
Easy daily application

#TOP 9 Best Hair Serum for Dry Hair

CHI Silk Infusion Leave-in Serum for Hair

CHI
97125
White
59 ml (Pack of 1)

CHI Silk Infusion | Leave-in Serum for Repair Strenghtening Moisturizing Hair | All & Dry Hair | 59 ml

CHI Silk Infusion Serum is an alcohol-free leave-in treatment suitable for all hair types. Its rich ingredients penetrate the hair, helping to strengthen it while providing incredible softness. You will enjoy enhanced manageability and shine without any build-up, making styling easier. Additionally, this serum protects your hair from thermal styling and environmental damage, ensuring your locks remain vibrant and healthy.

9.2

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What We Like

Alcohol-free formula
Strengthens and softens hair
Enhances manageability and shine
Protects against thermal damage
Color and gluten safe

#TOP 10

MIZANI Therma Strength Strengthening Serum 148 ml

MIZANI
913350
148 ml (Pack of 1)

Therma Strength Strengthening Style Serum 148 ml

The MIZANI Strengthening Serum is a salon professional hair care product designed to enhance your hair's strength and resilience. Being 100% genuine, you can trust its quality and effectiveness. This serum works to nourish and protect your hair, making it more manageable and less prone to damage. By incorporating this serum into your routine, you’ll find that your hair feels healthier and looks shinier, offering you the confidence that comes with beautiful, strong hair.

9.1

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What We Like

Salon professional quality
100% genuine product
Strengthens hair
Nourishes and protects
Enhances manageability

Editor's Notes

During our strengthening hair serum research, we found 56 strengthening hair serum products and shortlisted 10 quality products. We collected and analyzed 207,431 customer reviews through our big data system to write the strengthening hair serums list. We found that most customers choose strengthening hair serums with an average price of £11.58.

The strengthening hair serums are available for purchase. We have researched hundreds of brands and picked the top brands of strengthening hair serums, including OGX, Creip, Umberto Giannini, Viviscal, CHI.

Written by

Charlotte Powell

Charlotte Powell is a dermatologist and a licensed cosmetologist from Westminster, London. However, she was first a cosmetologist from London Beauty Training School. According to Charlotte, she needed better insight into the human skin, hence the dermatology degree. Long before she acquired her degree, she wrote and edited articles, eBooks, and editorials for companies and websites. Charlotte combines her skill and knowledge in providing DIY Beauty tips amongst other fashion related topics.