Thickening Hair Serum

Sephora customers often prefer the following products when searching for Thickening Hair Serum.

Discover the secret to voluminous locks with our Thickening Hair Serum. Say goodbye to flat, lifeless hair and hello to full-bodied, bouncy tresses. Formulated with cutting-edge ingredients designed to plump each strand from root to tip, this hair serum will give you the luscious volume you've always dreamed of. Whether you have fine, thin hair or just want to add some extra oomph to your style, this serum is your go-to solution for achieving enviable thickness and body. Elevate your hair game and unleash a mane that commands attention with our Thickening Hair Serum.

$49.00

Nutrafol gifted me their Women’s Lightweight Thickening-Hair Serum for Thinning Hair. I haven't had this long enough to know if it really works to help thicken hair (that would take 4-6 months minimum), so this review is only based on application and texture. ...Super happy and exited of the results Nutrafol thickening hair serum. I’ve noticed several baby hairs by my bangs and slowly my hair feels a bit fuller.

What it is: A hair serum, physician-formulated with patent-pending Ashwagandha Exosomes, that boost cell renewal and naturally activate visible thickness and hair strength. (1)

Hair Type: Straight, Wavy, Curly, and Coily

Hair Texture: Fine, Medium, and Thick

Hair Concerns:
- Thinning
- Color Safe
- Damage, Split Ends, and Breakage

Key Benefits:
- Visibly improves hair thickness and strength (1)
- Visibly reduces hair breakage (1)
- Replenishes nutrients directly at your scalp for healthier-looking hair (1)

Highlighted Ingredients:
- Ashwagandha Exosomes: Filled with protein, RNA, and lipids to boost cell renewal on the scalp.

$32.00

Super Serum...I am loving the results of this Thickening Rice Water Serum, my hair is stronger, healthier and super shiny. ...Good serum...I’ve been using this serum for about 1.5 weeks. I apply on dry hair from mid shaft down (per instructions).

What it is: A lightweight, thickening hair serum infused with Japanese-sourced rice water that hydrates, repairs damage, reduces split ends, and strengthens fragile hair while leaving hair soft and shiny.

Hair Type: Straight, Wavy, Curly, and Coily

Hair Texture: Fine and Medium

Hair Concerns:
- Thinning
- Volumizing
- Damage, Split Ends, and Breakage

Key Benefits:
- Leaves hair 30x stronger and increases hair diameter*
- Reduces split ends up to 91 percent and protects against future damage*
- Leaves hair strands soft, smooth, and shiny

Highlighted Ingredients:
- Rice Water: Rich in amino acids, vitamins, and antioxidants to help restore damage and prevent future breakage.
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$70.00

Fantastic hair system for my fine hair!...I received a free sample in exchange for my honest feedback. Shu uemura thickening serum is amazing!!! I love the sleek and modern look of the bottle. ...After I washed and blow dry my hair with the Izumi tonic shampoo and hair mask, I blow, dried my hair out completely and use this thickening rice, water hair serum.

What it is: A lightweight, thickening hair serum infused with Japanese-sourced rice water that hydrates, repairs damage, reduces split ends, and strengthens fragile hair while leaving hair soft and shiny.

Hair Type: Straight, Wavy, Curly, and Coily

Hair Texture: Fine and Medium

Hair Concerns:
- Shine
- Volumizing
- Damage, Split Ends, and Breakage

Key Benefits:
- Leaves hair 30x stronger and increases hair diameter*
- Reduces split ends up to 91 percent and protects against future damage*
- Leaves hair strands soft, smooth, and shiny

Highlighted Ingredients:
- Rice Water: Rich in amino acids, vitamins, and antioxidants to help restore damage and prevent future breakage.
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CurlsmithFull Lengths Density Elixir

ITEM: 2623221

Size: 2 oz / 60 mL

50 Reviews

$39.00

I’m so happy that more companies are leaving oils and switching to serums. This serum is so lightweight and absorbs super fast! ...I can’t speak to the results of thickening my hair (only used for a week) but I will keep using it diligently because I love it so far!

What it is: A nighttime scalp serum that stimulates hair follicles and promotes healthier-, fuller-, thicker-, longer-looking hair.

Hair Type: Straight, Wavy, Curly, and Coily

Hair Texture: Fine, Medium, and Thick

Hair Concerns:
- Thinning
- Flaky, Dry Scalp

Key Benefits:
- Supports hair growth
- Improves scalp health

Highlighted Ingredients:
- Redensyl™: Stimulates follicles’ stem cells.
- Capixyl™: Provides fuller-, thicker-, and healthier-looking hair.
- Procapil™: Targets the aging of the hair follicle.

Ingredient Callouts: Free of parabens, phthalates, mineral oil, sulfates SLS & SLES. It is also cruelty-free.

What Else You

$50.00

No frizzies, less hair fallout, thickening (some), super shiny, nourished...Amazing hair serum for frizz...This anti-frizz straightening serum has saved my frizzy hair! My hair always looks frizzy and feels so dry but once I tried Rossano Ferretti serum My hair was instantly frizz free.

What it is: A luxe straightening serum that eliminates frizz, supports sleek, smooth hairstyles, and helps reduce breakage.

Hair Type: Fine, Medium, and Thick

Hair Texture:Coily, Curly, Straight, and Wavy

Hair Concerns:
- Hold and Style Extending
- Frizz
- Straightening/Smoothing

$69.00

It's not easy to find a hair serum made for men, so I was glad to give this one a try. ...My first impression of this men's hair thickening serum is fantastic. It's lightweight and absorbs easily without causing any itching on my husband's scalp.

What it is: A fast-absorbing, restorative hair serum physician-formulated for men with ashwagandha exosomes to naturally support visible density and hair strength. (1-3)

Hair Texture: Straight, Wavy, Curly, and Coily

Hair Type: Fine, Medium, and Thick

Hair Concerns:
- Color-Safe
- Damage, Split Ends, and Breakage
- Thinning

Key Benefits:
- Improves visible thickness and strength (2, 3)
- Supports hair density (4)
- Replenishes nutrients directly at your scalp (5-7)

Highlighted Ingredients:
- Ashwagandha Exosomes: Filled with protein, RNA, and lipids for healthy looking hair. (3)
- Irish Moss Peptides: Support visibly thick

$62.00

Must have hair routine...I recommend this product for dry scalp & dandruff, to thicken your hair. I have curly med/thick hair, long black hair....Lightweight serum for dry scalp...My hair was light and not weighed down by the serum once dry.

What it is: A scalp serum that moisturizes dry scalp for immediate comfort, leaving the scalp healthy and refreshed.

Hair Texture: Straight, Wavy, Curly, and Coily

Hair Type: Fine, Medium, and Thick

Hair Concerns:
- Dryness
- Flaky and Dry Scalp

Key Benefits:
- Provides immediate scalp hydration and nourishment
- Hydrates and moisturizes dry scalp to reduce discomfort
- Protects and balances scalp moisture

Highlighted Ingredients:
- Plant-Based Proteins: Nourishes hair with essential nutriments and helps retain moisture.
- Niacinamide: Locks in hydration for long-lasting hair strength.

What Else You Need to Know: This lightweight, fast absorbing scalp serum hydrat

$46.00

I love this serum! It goes in and doesn’t make my hair greasy and it’s so lightweight. ...I use this every time I wash my hair and I have noticed that especially in photos, my hair seems to be thickening around my hairline.

What it is: A serum that promotes key scalp collagens while reducing shedding up to 90% — for youthfully thick, supple, resilient-looking hair. Results in as little as 30 days.


Hair Texture: Straight, Wavy, Curly, and Coily


Hair Type: Fine, Medium, and Thick


Hair Concerns:

- Dryness

- Flaky/Dry Scalp

- Thinning


Key Benefits: 
- Supports key hair-optimizing scalp collagens

- Promotes youthful-, supple-, elastic-looking strands

- Addresses thinning, brittleness, and shedding


$198.00

I used their original serum for months and it improved my hair so much. ...I have noticed such a difference in the thickness of my hair with this product. I would definitely recommend it for anyone who has thin straight hair.

What it is: A three-month supply of a dermatologist-codeveloped hair serum that addresses shedding and is clinically shown to visibly improve hair density while promoting a balanced scalp.

Hair Texture: Straight, Wavy, Curly, and Coily

Hair Type: Fine and Medium

Hair Concerns:
- Thinning
- Flaky Dry Scalp

Key Benefits:
- Improves hair density
- Promotes a balanced scalp
- Strengthens from the root

Highlighted Ingredients:
- GROActive+ Complex™: A patent-pending, AI-discovered, plant-based compound to fight shedding.
- Spanish Microalgae: A prebiotic scalp superfood that hydrates to support the skin barrier.
- Plant Stem Cells: Rich in proteins to help anchor strands a

$58.00

Complimentary from therootist: Recently I noticed that my hair is thinning and tried different scalp serums before this - not much has changed until this serum I noticed baby hairs are coming in. ...Solution for thinning hair...The Densifying Serum for Thin Hair from Rootlist is designed to target hair thinning by fortifying and thickening strands from the root to the tip.

What it is: A serum that is clinically shown to reduce signs of shedding, hair fallout, and thinning at the scalp for thicker, fuller-looking hair in as few as 90 days.

Hair Texture: Straight, Wavy, Curly, and Coily

Hair Type: Fine, Medium, and Thick

Hair Concerns:
- Color Safe
- Damage, Split Ends, and Breakage
- Thinning

Key Benefits:
- Clinically shown to reduce hair fallout and shedding by up to 85%
- Minimizes signs of thinning at the scalp for fuller-looking part lines and hairlines
- Feeds immediate, necessary nutrition to roots, scalp and hair for thicker, fuller, healthier-looking hair

Highlighted Ingredients:
- Patent-Pending Rootbiomic Ferment™: Contains nutrie

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“For reference, I have oily roots and the rest of my hair is normal. I don't shampoo my hair daily so I use this once every 3-4 days and it seems to help balance my scalp without drying out my ends (like other shampoos tend to”
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“I am loving the results of this Thickening Rice Water Serum, my hair is stronger, healthier and super shiny”
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“Another win from Kérastase! The perfect shampoo for my very fine hair. Added a nice level of volume and texture without weighing my hair down. ”
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