11 Best Hair Thickening Serums

by Ramona Sinha
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Not everyone is blessed with thick, dense, and healthy-looking hair. There are many reasons that you may have fine, flat, or sparse hair, but do not worry. Hair thickening serums can help you.  These serums work in two ways – some of them penetrate and plump the hair strands to make fine hair appear thick and full, and some promote hair growth. You can choose either one, depending on your needs. This article lists the 11 best hair thickening serums that can volumize your hair. Scroll down to check them out.

11 Best Hair Thickening Serums – Reviews

1. Toppic Hair Fattener Advanced Thickening Serum

The Toppic Hair Fattener Advanced Thickening Serum is formulated for fine or thin hair. It has a concentrated keratin formula that maximizes each hair strand to make it appear fuller and thicker. The serum also contains vitamin E that boosts and nourishes the hair shafts. This product is safe for color-treated hair.

Key Ingredients: Vitamin E and Keratin

Pros

  • Sulfate-free
  • Paraben-free
  • Pleasant smell
  • Lasts long
  • Hygienic pump dispenser

Cons

  • May dry out the hair

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2. Eufora Thickening Serum

The Eufora Thickening Serum promotes hair growth.  It is formulated with a ProAmino Cell Complex that includes butyl avocadate that regulates 5-alpha reductase and sebum production and neem seed oil to reduce scalp dryness and irritation. The complex also contains peppermint and citrus oil that promote oxygen flow to the scalp and licorice root extract to prevent flakiness.

Key Ingredients: ProAmino Cell Complex

Pros

  • Gluten-free
  • Mineral oil-free
  • Paraben-free
  • Petrolatum-free
  • Vegan

Cons

None

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3. Hair Restoration Laboratories Maximum Hair Thickening Serum

The Maximum Hair Thickening Serum by Hair Restoration Laboratories is clinically tested by trichologists and promotes hair growth. It is developed with DHT Halting Technology, a blend of proprietary extracts, and contains a high percentage of DHT blockers to prevent pattern baldness. This serum supports healthy hair growth, giving you shiny, thicker, and manageable hair.

Key Ingredients: DHT Halting Technology (Pumpkin seed and Green tea extracts, Keratin, Saw palmetto, Biotin, Caffeine, Coconut, and Argan oils)

Pros

  • No animal testing
  • Paraben-free
  • Sulfate-free
  • Phthalate-free
  • Silicone-free
  • Suitable for all hair types

Cons

  • Strong chalky odor

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4. PURA D’OR Mountain Top Biotin Hair Thickening Scalp Serum

The Mountain Top Biotin Hair Thickening Scalp Serum by PURA D’OR improves blood circulation to the scalp, promoting hair growth.  This serum contains saw palmetto, biotin, and caffeine that block DHT, a hormone that causes hair loss, and nourishes the follicles to promote hair growth. It also contains tea tree oil that prevents itchiness and dryness and keeps the scalp healthy.

Key Ingredients: Biotin, Caffeine, and DHT blockers

Pros 

  • Contains natural ingredients
  • Sulfate-free
  • Paraben-free
  • No animal testing
  • Hypoallergenic
  • Vegan

Cons 

  • Slow results

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5. SeroVital Hair Regeneres Advanced Hair Thickening Serum

The SeroVital Hair Regeneres Advanced Hair Thickening Serum works by strengthening the weak follicles and preventing hair fall. It contains a unique Anchoring Complex that optimizes the scalp environment and revives the weak hair follicles to prevent hair fall. This complex contains raspberry ketone that fights gray hair by preventing color from fading.

Key Ingredients: Raspberry ketone

Pros 

  • Non-greasy
  • Clinically-tested
  • Paraben-free

Cons

None

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6. Good Lab Blooming & Thickening Serum

The Good Lab Blooming & Thickening Serum contains a proprietary blend of hair specific vitamins and DHT blockers to promote hair growth. It contains biotin, nettle leaf extract, and saw palmetto that nourishes the hair roots to encourage growth. The guava leaf extract promotes hair growth and controls dandruff, peptides block DHT, and naturally-derived caffeine stimulates the hair follicles. This serum fortifies hair shaft elongation and expands the hair growth cycle to give you a thicker and fuller mane.

Key Ingredients: Biotin, Caffeine, Nettle leaf, and Saw palmetto

Pros

  • Contains organic ingredients
  • Safe for colored hair
  • Drug-free
  • Sulfate-free

Cons

  • Expensive

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7. AG Hair Care Root Thikkening Serum

The AG Hair Care Root Thikkening Serum stimulates the roots to promote healthy hair growth. It is fortified with a Regenerative Complex that includes pea sprout extract, ginseng, and ginger to maintain a healthy scalp environment and facilitate hair growth.  The serum also contains panthenol to thicken the hair shaft and make your hair appear fuller and silk proteins to add moisture, elasticity, and strength.

Key Ingredients: Pea sprout, Ginger, and Ginseng extracts

Pros

  • Handcrafted
  • Contains natural ingredients

Cons

  • Contains alcohol denat and urea

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8. Tela Beauty Organics Hair Thickening serum

The Tela Beauty Organics Hair Thickening Serum amplifies each hair strand from root to tip to make it appear thicker. This lightweight serum contains certified organic baobab oil and a patent-pending Hydro Pelusi Ceramide Complex that plumps the hair strands without making them frizzy. The blend of sugar cane, sugar maple, orange, and lemon extracts soothes your hair and scalp.

Key Ingredients: Baobab oil and Hydro Pelusi Ceramide Complex

Pros

  • Vegan
  • Gluten-free
  • Paraben-free
  • Color-safe

Cons

  • Maay weigh the hair down

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9. Ker Max Thickening Hair Serum

The Ker Max Thickening Hair Serum accelerates the health of the scalp and hair follicles to promote hair growth. It contains an exclusive KerGro 3X-p formula that includes fruit stem cells, peptide amino acids, and botanical extracts to facilitate hair growth. This serum also balances excessively dry and oily scalps to maintain an optimum environment for hair growth.

Key Ingredients: Fruit stem cells, Peptide amino acids, and Botanical extracts

Pros

  • Gluten-free
  • Paraben-free
  • Hypoallergenic
  • Ammonia-free
  • Cruelty-free

Cons

None

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10. Samy Fat Hair Thickening Serum

The Samy Fat Hair Thickening Serum has an ultra-lightweight formula. It contains soy protein, citric acid, and other natural extracts that evenly coat each strand of hair and expand their dimension to thicken them. The serum also strengthens and fortifies weak hair strands.

Key Ingredients: Glycerin, Citric Acid, and Soy protein

Pros

  • Lightweight
  • Contains natural extracts

Cons

  • Sticky

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11. Hobe Labs Energizer Hair Thickening Serum

The Hobe Labs Energizer Hair Thickening serum instantly thickens hair strands and volumizes your locks. It contains a proprietary Bio-Ferm Herbal Complex and vitamin B5, wheat proteins, and amino acids that penetrate the scalp and cortex to provide nutrients and strengthen them. The serum also improves hair manageability and offers a light hold.

Key Ingredients: Wheat protein, Amino acids, Bio-Ferm Herbal Complex, and Vitamin B5

Pros

  • Cruelty-free
  • Alcohol-free
  • No artificial colors

Cons

  • Overpowering floral scent

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Whether you want to grow thicker hair or make your fine hair appear thicker, we have got you covered! All these products contain ingredients that can thicken your hair shafts and promote hair growth. Go ahead and pick the one that suits your needs and flaunt fuller locks!

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Ramona Sinha

Ramona is a journalist-turned-content writer. She holds a Master’s degree in English Literature and has been writing for the digital world for over five years. She specializes in writing for Skin Care. She has done a certificate course titled ‘Dermatology: Trip To The Skin’, offered by Novosibirsk State University. She believes that beauty begins with a good skin care regimen and is on a mission to eliminate all toxins from her routine. She helps and guides readers in selecting products and ingredients specific to their skin type/issue. When Ramona is not working, her books and passion for music, good food, and traveling keep her busy.
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