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Hair Care

Hair Thickening Serums

10 Best Hair Thickening Serums 2025 in the United States

Name: Mielle Organics Rosemary Mint Scalp & Hair Strengthening Oil for All Hair Types, 2 Ounce
Brand: Mielle Organics
Price: 9.95 USD
Availability: InStock

From leading brands and best sellers available on the web.

OGX Repair & Protect Bond Protein Repair 3-in-1 Oil Mist, Multi-Benefit Hair Oil Protects Dry, Damaged Hair Against Frizz, Strengthens, & maintains Shine, 1.7 fl. oz

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Winner

Mielle Organics

Mielle Organics Rosemary Mint Scalp & Hair Strengthening Oil for All Hair Types, 2 Ounce

9.9

score

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OGX Repair & Protect Bond Protein Repair 3-in-1 Oil Mist, Multi-Benefit Hair Oil Protects Dry, Damaged Hair Against Frizz, Strengthens, & maintains Shine, 1.7 fl. oz

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divi

Editor’s Choice

divi Hair Scalp Serum for Women and Men - Revitalize and Balance Your Scalp - Improves Appearance of Thinning Hair, Nourishes the Scalp and Helps Remove Product and Oil Buildup, 30ml

9.8

score

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Nutrafol

Nutrafol Women's Hair Serum, Supports Visibly Thicker and Stronger Hair, Vegan, Lightweight and Fast-Absorbing - 1.7 Fl Oz, 1 Bottle

9.6

score

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Nioxin

Nioxin Night Density Rescue Serum - Overnight Hair Thickening Serum, 2.4 fl oz (Packaging May Vary)

9.3

score

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Nioxin

Nioxin Density Defend Diamax Advanced Hair Thickening Serum | With Caffeine, Niacinamide & Panthenol | For Thicker, Fuller-Looking Hair | 3.38 Fl Oz

9.1

score

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PEFAMNE

PEFAMNE 5% Minoxidil for Men and Women Hair Growth Oil, Biotin Serum, Hair Regrowth Treatment for Scalp Hair Loss, Natural, for Thicker Longer Fuller Healthier Hair 2.02 oz

8.8

score

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Creip

Natural Hair Growth Oil Spray: Batana Rosemary Serum Biotin Caffeine Scalp Care Treatment - Thinning Hair Regrowth Thickening for Women Men 2 FL OZ

8.5

score

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BOLDIFY

Editor’s Choice

Boldify Hair Thickening, Volumizing, Texture Spray for Hair, Stylist Recommended for Women & Men, 8oz

8.2

score

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Nioxin

Nioxin System 4 Scalp + Hair Thickening Treatment- Serum for Damaged Hair with Progressed Thinning, 3.4 oz (Packaging May Vary)

7.9

score

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#10

Nioxin

Nioxin Density Defend Hair Thickening Gel - Thickening Gel For Volumizing Hair, 5.1 oz (Packaging May Vary)

7.6

score

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More products we considered

Seven Minerals Cold Pressed Castor Oil with Frankincense - 16 fl oz Bottle - Unrefined & Hexane Free - Hair Growth, Thicker Eyelashes & Eyebrows, Dry Skin Care, Joint and Muscle Pain (Pack of 1)

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Bali Secret Hair Treatment Serum 40 Capsules no Rinse with Argan Macadamia & Avocado Oils - Vitamins A, E, Pro B5 - Conditioner for Women & Men

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Karseell Moroccan Argan Oil for Hair Healing Cold Pressed Weightless Argan Oil Hair Serum for Dry Damaged Hair 50ml

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The Goodbye Company Organic Castor Oil 100% Pure Extra Virgin Castor Oil Cold Pressed Unrefined, Hexane-Free - For Healthy Natural Skin, Hair Growth and Eyelashes (500ml)

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Organic Jojoba Oil Cold Pressed Unrefined - 100% Pure Organic Certified Oil for Skin Hair & Nails - Organic Skin Care & Natural Beauty DIY Carrier Oil - Dermatologist Tested & Non GMO (16 Fl Oz)

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How do we rank products for you?

Our technology thoroughly searches through the online shopping world, reviewing hundreds of sites. We then process and analyze this information, updating in real-time to bring you the latest top-rated products. This way, you always get the best and most current options available.

10 Best Hair Thickening Serums 2025 in the United States

OGX Repair & Protect Bond Protein Repair 3-in-1 Oil Mist, Multi-Benefit Hair Oil Protects Dry, Damaged Hair Against Frizz, Strengthens, & maintains Shine, 1.7 fl. oz

Mielle Organics Rosemary Mint Scalp & Hair Strengthening Oil for All Hair Types, 2 Ounce

OGX Repair & Protect Bond Protein Repair 3-in-1 Oil Mist, Multi-Benefit Hair Oil Protects Dry, Damaged Hair Against Frizz, Strengthens, & maintains Shine, 1.7 fl. oz

divi Hair Scalp Serum for Women and Men - Revitalize and Balance Your Scalp - Improves Appearance of Thinning Hair, Nourishes the Scalp and Helps Remove Product and Oil Buildup, 30ml

Nutrafol Women's Hair Serum, Supports Visibly Thicker and Stronger Hair, Vegan, Lightweight and Fast-Absorbing - 1.7 Fl Oz, 1 Bottle

Nioxin Night Density Rescue Serum - Overnight Hair Thickening Serum, 2.4 fl oz (Packaging May Vary)

Nioxin Density Defend Diamax Advanced Hair Thickening Serum | With Caffeine, Niacinamide & Panthenol | For Thicker, Fuller-Looking Hair | 3.38 Fl Oz

Seven Minerals New 16 fl oz Glass Bottle Castor Oil Organic Cold Pressed Unrefined Glass Bottle Pack - 100% Pure USDA Certified Organic Hexane Free

Cliganic Organic Argan Oil for Hair, Face & Skin (Bulk, 32oz with Pump) - 100% Pure, Cold Pressed

Cliganic USDA Organic Castor Oil, 100% Pure (16oz with Eyelash Kit) - For Eyelashes, Eyebrows, Hair & Skin | Bulk, Natural Cold Pressed Unrefined Hexane-Free | DIY Carrier Oil

The Goodbye Company Extra Virgin Castor Oil - 4.25oz - 100% Pure Castor Oil Cold Pressed Unrefined, Hexane-Free - For Healthy Natural Skin, Hair Growth and Eyelashes (120ml)

BodyJ4You Organic Castor Oil for Hair Growth: Natural Serum for Eyelashes and Eyebrows - Glass Bottle 1 Fl Oz

PEFAMNE 5% Minoxidil for Men and Women Hair Growth Oil, Biotin Serum, Hair Regrowth Treatment for Scalp Hair Loss, Natural, for Thicker Longer Fuller Healthier Hair 2.02 oz

Natural Hair Growth Oil Spray: Batana Rosemary Serum Biotin Caffeine Scalp Care Treatment - Thinning Hair Regrowth Thickening for Women Men 2 FL OZ

Boldify Hair Thickening, Volumizing, Texture Spray for Hair, Stylist Recommended for Women & Men, 8oz

Nioxin System 4 Scalp + Hair Thickening Treatment- Serum for Damaged Hair with Progressed Thinning, 3.4 oz (Packaging May Vary)

Nioxin Density Defend Hair Thickening Gel - Thickening Gel For Volumizing Hair, 5.1 oz (Packaging May Vary)

Hair Serums

Hair Thickening Shampoos

Mane Hair Thickening Sprays

Hair Thickening Spray

Hair Thickening Products

Seven Minerals Cold Pressed Castor Oil with Frankincense - 16 fl oz Bottle - Unrefined & Hexane Free - Hair Growth, Thicker Eyelashes & Eyebrows, Dry Skin Care, Joint and Muscle Pain (Pack of 1)

Bali Secret Hair Treatment Serum 40 Capsules no Rinse with Argan Macadamia & Avocado Oils - Vitamins A, E, Pro B5 - Conditioner for Women & Men

Karseell Moroccan Argan Oil for Hair Healing Cold Pressed Weightless Argan Oil Hair Serum for Dry Damaged Hair 50ml

The Goodbye Company Organic Castor Oil 100% Pure Extra Virgin Castor Oil Cold Pressed Unrefined, Hexane-Free - For Healthy Natural Skin, Hair Growth and Eyelashes (500ml)

Organic Jojoba Oil Cold Pressed Unrefined - 100% Pure Organic Certified Oil for Skin Hair & Nails - Organic Skin Care & Natural Beauty DIY Carrier Oil - Dermatologist Tested & Non GMO (16 Fl Oz)