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

Browse the top-ranked list of Hair Serums below along with associated reviews and opinions.

Size 2.2 oz/ 60 mL · ITEM 2127306
exclusive· limited edition· buzzworthy· online only
$51.00

LOVE IT...Love it!...I'm always a bit wary of hair and scalp serums because I don't want to end up with a greasy scalp, but this hasn't given me a problem....Right after I get out of the shower and brush and towel dry my hair a bit, I apply this serum for strength and to reduce split ends.
Which hair type is it good for?
✔ Straight
✔ Wavy
✔ Curly
✔ Coiled
✔ Tightly Coiled

What it is:
A specialized scalp and hair treatment that will leave your hair looking shinier and feeling thicker.

Key benefits:
- Supports hair strength, shine, and softness
- Supports natural hair growth
- Lightweight, silky texture

If you want to know more…
This scalp and hair serum strengthens hair fibers by supporting their uniformity and smoothness. It helps hair to stay strong as it grows, maximizing the potential length of your hair over time. It also supports hair’s resistance to breakage, leaving it shinier, soft to the touch, and with a thicker, more substantial feel.
Size 4 oz · ITEM 1807460
COLOR: Glassa [ 3 more colors ]
exclusive· limited edition· buzzworthy· online only
$30.00

What it is:
An easy-to-use, color reviving gel formula that boosts tone and adds shine to color-treated hair.

What it is formulated to do:
Color Reviving Gloss helps refresh color-treated hair. The shades are designed to either add warmth or neutralize brassiness to keep your color the way you want it. Each tube contains two full applications for shoulder-length hair, while every application lasts six to eight washes. It’s longer lasting than temporary formulations and doesn’t require an activator or mixing like most semi-permanent colors.

What else you need to know:
This product is gluten-free. It comes with two pairs of gloves for mess-free application.
Size 8 oz/ 236 mL · ITEM 1895630
exclusive· limited edition· buzzworthy· online only
$28.00

It's ok...Tis nice...I blow dry my hair every week to two weeks and my hair is a little on the finer side so I use a lot of dry shampoo in between washes....) Anyway, I loved the way the product felt in my hair, it almost felt like a conditioner in and of itself, and when I followed with the conditioner, I could run my fingers through my hair like it was butter.
Which hair type is it good for?
✔ Straight
✔ Wavy
✔ Curly
✔ Coiled
✔ Tightly Coiled

What it is:
A gentle, deep cleansing formula that thoroughly removes buildup without stripping away essential moisture, while adding shine and bounce.

Key benefits:
- Removes product buildup
- Boosts curls bounce and shine
- Helps reduce scalp dryness

If you want to know more…
This rejuvenating serum uses micellar technology to remove buildup without stripping. Abyssinian seed oil and jojoba deliver moisture and shine, adding bounce back to waves and curls. Plus, the lush, refreshing scent captures a purifying, relaxing, and clean feeling.

What it is formulated WITHOUT:
- Parabens
- Sulfates
- Phthalates

What else you need to know:
This product is silicone-free.
Size 3.4 oz/ 100 mL · ITEM 2126985
exclusive· limited edition· buzzworthy· online only
$50.00

Which hair type is it good for?
✔ Straight
✔ Wavy
✔ Curly
✔ Coiled
✔ Tightly Coiled

What it is:
A blend of four precious hair oils that will add shine, deeply nourish, and help to prevent breakage.

Key benefits:
- Multiple uses
- Adds shine and nourishment
- Fast absorption

If you want to know more…
This hair oil can be used before, during, and post blow dry for hair that’s super-shiny, hydrated, and healthy-looking.
Size 2.5 oz · ITEM 1200179
exclusive· limited edition· buzzworthy· online only
$20.00

What it is:
A finishing product to smooth and polish hair.

What it does:
Ouidad Shine Glaze Serum fights frizz and static while reflecting light to add luminosity and glass-like shine.

What it is formulated WITHOUT:
- Parabens
- Sulfates
- Synthetic Dyes
- Phthalates
- GMOs
- Triclosan

What else you need to know:
This unique finishing product contains crystal silicates that lend optimal control and deliver incredibly sleek results.
Size 1.7 oz/ 50 mL · ITEM 2140150
exclusive· limited edition· buzzworthy· online only
$38.00

Love it...Love it!...My hair has its bouncy shine back, using heat in my hair isnt such a no no now it doesn't frizz up and look awful instead it looks like I spent 4 hours when really I just blow dried it!...I used a very tiny amount on wet or dry hair (on the bottom half and ends only) and it worked well, but I'dn't suggest using it on the top of your hair at all.
Which hair type is it good for?
✔ Straight
✔ Wavy
✔ Curly
✔ Coiled
✔ Tightly Coiled

What it is:
A triple-action, triple-use concentrate that repairs, protects, and seals damaged hair and split ends in one step.

Key benefits:
- Repairs, protects, and seals damaged hair
- Reduces breakage up to 99 percent
- Use on wet or dry hair, or mix into any Caviar conditioner

If you want to know more…
This three-in-one sealing serum is designed to be a proactive and reactive powerhouse for damaged and aging hair. The triple-action concentrated formula consists of a biomimetic amino acid/lipid blend that imitates those naturally found in hair to help repair, protect, and seal strands at their core. Formulated with caviar bond enforcing technology, this serum intuitively targets and seals cracks and fissures in the hair surface to help transform hair. This product is clinically proven to significantly smooth hair, while reducing breakage and split ends up to 99 percent.

What it is formulated WITHOUT:
- Sulfates

What else you need to know:
Inspired by the Science of Skincare for Hair®, Caviar Anti-Aging is Alterna’s first comprehensive line of hair care products that address intrinsic (natural aging process), chemical, and environmental aging by infusing hair with the finest, most effective ingredients to restore hydration, strength, vibrancy, and elasticity for more youthful-looking hair. Every product contains pure caviar from the roe of non-endangered sturgeon fish, sustainably farmed in France. This product is rich in vitamins, minerals, and omega fatty acids that help restore hair's lipid layer creating healthier, younger-looking hair.

This product is suitable for color-treated hair and free of added SLS/SLES, DEA/TEA, and synthetic color.
Size 2 oz/ 59 mL · ITEM 1730969
exclusive· limited edition· buzzworthy· online only
$14.50

What it is:
A thick, rich blend of moisturizing oils that effectively softens dry, brittle, and coarse hair.

What it is formulated to do:
This thick, shiny oil acts as a barrier agent and protective medium against harsh conditions and extremes. It is a natural humectant and possesses hair conditioning, thickening, and softening properties—protecting ends and moisturizing dry, brittle, and coarse hair.

What it is formulated WITHOUT:
- Parabens
- Sulfates

What else you need to know:
This product is 100 percent natural and silicone-free.
Size 1.7 oz/ 50 mL · ITEM 2140366
exclusive· limited edition· buzzworthy· online only
$34.00

Which hair type is it good for?
✔ Straight
✔ Wavy
✔ Curly
✔ Coiled
✔ Tightly Coiled

What it is:
A powerful hair serum that can be used as a leave-in treatment or as a color-preserving mask to boost the level of conditioning, adding radiance and shine to hair.

Key benefits:
- Preserves hair color, vibrancy, shine
- Rejuvenates color
- Intensifies shine

If you want to know more…
This innovative dual-use serum can be used as a leave-in treatment to add shine, tame frizz, and provide protection against UV exposure, or mixed with any Alterna conditioner to transform it into a color recharging mask—boosting the level of conditioning and adding radiance to hair. Alterna's proprietary dual capture complex replenishes moisture while reducing oxidative color damage with a synergistic blend of natural UV filters: red raspberry leaf oil and sunflower seed oil.

What it is formulated WITHOUT:
- Parabens
- Sulfates
- Phthalates

What else you need to know:
This product is free of DEA/TEA, petrochemicals, and dyes.

Research results:
Clinical results with use of CAVIAR Infinite Color Hold Shampoo, Conditioner, and Vibrancy serum vs. untreated hair, after 70 days:
- 70 days lasting color and shine
- 100% of participants felt their color was rich, shiny, and vibrant
- 93% users agreed the test regimen combated fade-out
- 93% users agreed the test regimen combated dry-out
- 97% users agreed the test regimen gave them lasting color
Size 2.1 oz/ 65 mL · ITEM 2011591
exclusive· limited edition· buzzworthy· online only
$20.00

Love it!...Amazing Product...I've struggled with dandruff/buildup since a young age (no matter how well I wash my hair) but I was SO happy with the results of this product!...I still had a few spots that were MILDLY itchy but NOTHING compared to what I have been dealing with.
Which hair type is it good for?
✔ Straight
✔ Wavy
✔ Curly
✔ Coiled
✔ Tightly Coiled

What it is:
A lightweight scalp treatment spray that reinforces the scalp's natural protection and provides immediate and 24-hour relief and comfort.

Key benefits:
- Provides scalp comfort
- Maintains an optimal scalp balance
- Refreshes and soothes

If you want to know more…
Reset your scalp with instant relief. The soothing scalp spray instantly refreshes and comforts the scalp. The scalp’s natural protection is reinforced and irritation is soothed for 24-hour relief from triggers that cause sensitivity such as stress, seasonal change, travel, over coloring, and styling. Formulated with peony extract for soothing and anti-irritating properties, the optimal scalp balance is maintained and protected against irritation. The non-greasy, fresh, lightweight formula can be sprayed as needed on the scalp and will not weigh down hair.

What it is formulated WITHOUT:
- Parabens
- Sulfates

What else you need to know:
This product is silicone-free, vegan, and pH balanced.

Research results:
In a tolerance test on irritated scalp, 32 subjects during 7 days, once-daily use:
- 97% of women felt immediate comfort and reduced irritation

After 7 days:
- 94% of women felt scalp was hydrated
- 90% of women felt scalp was protected
Size 1.6 oz/ 50 mL · ITEM 1921147
exclusive· limited edition· buzzworthy· online only
$28.00

Which hair type is it good for?
✔ Straight
✔ Wavy
✔ Curly
✔ Coiled
✔ Tightly Coiled

What it is:
A lightweight styling serum that effortlessly detangles, defines, and protects hair from heat damage.

Key benefits:
- Protects hair from heat damage
- Gives gloss, shine, and definition
- Detangles and controls frizz

If you want to know more…
Non-sticky and super sleek, this serum enhances the natural texture of all hair types. It can be used to prep hair for protection before heat styling, to detangle, as a finishing product to add shine and definition, or for a quick style refresh while out and about.

What it is formulated WITHOUT:
- Parabens
- Sulfates
- Phthalates

What else you need to know:
"This serum gives a defined, glossy—but never greasy—finish to all hair texture types. I always warm it first by rubbing a few drops in between my palms and over the backs of my hands. This makes a little to go a long way and encourages an even distribution through the hair."—Vernon François, Creative Director and Founder
Size 4 oz/ 118 mL · ITEM 1984525
exclusive· limited edition· buzzworthy· online only
$29.00

Which hair type is it good for?
✔ Straight
✔ Wavy
✔ Curly
✔ Coiled
✔ Tightly Coiled

What it is:
A frizz-defying non-greasy serum that delivers heat protection up to 450 degrees and helps to reduce breakage by up to 90 percent.

Key benefits:
- Helps protect up to 450° F
- Helps reduce breakage by 90%
- Minimizes frizz and flyaways

If you want to know more…
Whether you wear sleek, flat iron styles, voluminous blowouts, or gorgeously timeless curls, Protect. Heat Serum delivers up ultimate heat protection for worry-free styling. Protect is lightweight, enhances shine, and easily rinses away with Form Beauty’s Clarify so you can build your best styles on a fresh canvas. Just apply prior to heat styling to help reduce hair breakage.

What else you need to know:
This product is cruelty-free and formulated without synthetic perfumes and dyes.

The FORM hair care collection is rooted in the idea of coactivity—the brand’s way of saying that their products will not only make your hair look great, but also feel healthier. Their formulation philosophy adheres to a rigorous international standard that avoids over 2,000 potentially harmful ingredients, which means that their hair care solutions are simple, safe, effective, and complementary to your long- and short-term styling needs.

Research results:
In an independent, instrumental laboratory study, it was found:
- Damage caused by excessive heat treatment was reduced 90%
- Product maintained 100% of water content in hair

Clean at Sephora
When you spot our Clean seal, you can be sure we’ve checked that this brand’s product is made without the ingredients you told us you’d most like to avoid. 

Clean at Sephora™ is formulated without: 
Sulfates SLS and SLES, parabens, formaldehydes, formaldehyde-releasing agents, phthalates, mineral oil, retinyl palmitate, oxybenzone, coal tar, hydroquinone, triclosan, triclocarban. All skincare, hair, and makeup brands with the Clean Seal have less than one percent of synthetic fragrances.
Size 1.7 oz/ 50 mL · ITEM 2034932
exclusive· limited edition· buzzworthy· online only
$25.00

Which hair type is it good for?
✔ Straight
✔ Wavy
✔ Curly
✔ Coiled
✔ Tightly Coiled

What it is:
A lightweight serum that smooths, moisturizes, and protects hair during heat styling.

Key benefits:
- Protects against heat
- Prevents moisture loss
- Adds shine

If you want to know more…
Blockade heat defense serum shields hair from heat styling and blow drying, protecting against overheating and damage to the delicate hair fiber. The nutrient-packed elixir forms a protective, humidity-proof layer around each hair which prevents moisture loss and ensures a frizz-free, smooth, and shiny finish. The lightweight formulation contains dimethicone to protect against thermal treatments, prevent moisture loss, and form a barrier on the hair that smooths down the cuticle, as well as vitamin-rich sea buckthorn berry to keep hair healthy-looking.

What it is formulated WITHOUT:
- Parabens
- Sulfates
- Phthalates

What else you need to know:

This product is certified vegan and formulated without MIT/MCI, artificial colors, formaldehydes, formaldehyde-releasing agents, mineral oil, retinyl palmitate, oxybenzone, coal tar, hydroquinone, triclosan, triclocarban, aluminum, talc, and have less than one percent synthetic fragrances. It is safe for color-treated, Brazilian-treated, and keratin-treated hair.

Sea buckthorn berry (also known as obliphica) is included in all of Amika’s haircare and styling products. It contains over 190 biologically active compounds, including vitamin C (15 times more than an orange), vitamin A (three times more than a carrot), and vitamin E. It also has high concentrations of the rare omega-7, making up 40 percent of the berry. Typically only found in fish oil, omega-7 keeps free radicals at bay and promotes the production of collagen, a key building block for skin, hair, and nails.

Sea buckthorn has been thoroughly researched in over 130 modern scientific studies that have found that this berry promotes health. Women throughout the ages have used the obliphica berry to protect themselves against the ravages of the sun and the elements. Founded on tradition and now based on extensive scientific research, sea buckthorn is one of the biggest functional whole food rediscoveries of the 21st century.
Size 1 oz/ 30 mL · ITEM 2127421
exclusive· limited edition· buzzworthy· online only
$37.00

Which hair type is it good for?
✔ Straight
✔ Wavy
✔ Curly
✔ Coiled
✔ Tightly Coiled

What it is:
A repairing and binding serum that transforms very damaged and over-processed hair to leave it hydrated, conditioned, and healthy-looking.

Key benefits:
- Heals and seals the hair ends
- Heat protection up to 450°F
- Nourishes

If you want to know more…
With amino acids and its unique FIBRA-KAP™ formula, this serum delivers heat protection up to 450°F to prevent split ends, minimize breakage, and speed up drying time for silky-soft locks.
Size 4.2 oz/ 125 mL · ITEM 2126902
exclusive· limited edition· buzzworthy· online only
$37.00

Which hair type is it good for?
✔ Straight
✔ Wavy
✔ Curly
✔ Coiled
✔ Tightly Coiled

What it is:
A smoothing serum to discipline dry, frizzy, unmanageable hair.

Key benefits:
- Reduces frizz
- Gives beautiful shine and soft texture
- Detangles

If you want to know more…
Nutritive Oil Serum for Dry Frizzy Hair is formulated with nutri-huile complex and anti-frizz protection to leave hair silky smooth with incredible shine and manageability. The result is improved long-lasting volume control, softness, and shine.
Size 1.7 oz · ITEM 1840065
exclusive· limited edition· buzzworthy· online only
$59.00

Healthy addiction...Very well worth the price....I have fine, curly hair and have tried many hair oils and serums from Sephora....Absolutely addicted to this product in the best way obviously.:) Makes hair look and feel alive again.
Which hair type is it good for?
✔ Straight
✔ Wavy
✔ Curly
✔ Coiled
✔ Tightly Coiled

What it is:
A hair serum that helps fine, thin hair appear thicker and fuller, while also supporting its strength.

Key benefits:
- Hyaluronic acid helps hair strands appear thicker
- Hair feels stronger, softer, and more youthful
- Anti-aging, protective formula

If you want to know more…
This formula uses hyaluronic acid and many more natural ingredients, normally only found in the very best skincare products, to support hair thickness, strength, and softness, particularly in fine and thin hair. Anti-aging properties help tired and lifeless hair look and feel younger, newer, and full of life. The leave-in treatment does not need to be washed out, won't leave any residue, and will continue to condition and protect the hair over time. It’s also ideal for anyone concerned about hair thinning or hair loss, and is color-safe.

What else you need to know:
Inside its black and white packaging, a green heart beats. Rossano Ferretti Parma products benefit from the best that nature can offer for the beauty of hair, using the best natural ingredients and the latest skin and haircare technology.

The Rossano Ferretti Parma hair care portfolio is the result of three generations of Italian hairdressing heritage.

This product is also cruelty-free and 100 percent made In Italy.

Clean at Sephora
When you spot our Clean seal, you can be sure we’ve checked that this brand’s product is made without the ingredients you told us you’d most like to avoid.

Clean at Sephora™ is formulated without:
Sulfates SLS and SLES, parabens, formaldehydes, formaldehyde-releasing agents, phthalates, mineral oil, retinyl palmitate, oxybenzone, coal tar, hydroquinone, triclosan, triclocarban. All skincare, hair, and makeup brands with the Clean Seal have less than one percent of synthetic fragrances.
Size 2.5 oz/ 75 mL · ITEM 1989458
exclusive· limited edition· buzzworthy· online only
$18.00

Love it...I love it....It doesn't make my hair feel greasy, but provides moisture and softness, with just a bit weight to keep my fine hair down....I have frizzy hair and it instantly smoothed out my locks.
Which hair type is it good for?
✔ Straight
✔ Wavy
✔ Curly
✔ Coiled
✔ Tightly Coiled

What it is:
A unique, ultra-light, and non-greasy hair serum.

Key benefits:
- Smooths frizz
- Conditions dry ends
- Protects hair from humidity

If you want to know more…
This super-smoothing serum smooths frizz and flyaways, nourishes dry ends, and controls hair without weighing it down. Infused with a blend of natural oils derived from sunflower seeds, sesame seeds, and soy beans, and enriched with vitamin E, it protects hair from humidity and boosts shine, leaving strands clean, soft, and silky.

What else you need to know:
Kiehl’s is inspired by its rich heritage as an old-world apothecary, applying over 165 years’ worth of cosmetic, pharmaceutical, herbal, and medicinal knowledge into the formulations. They utilize the finest natural ingredients and incorporate advanced scientific technologies to ensure the highest quality and most efficacious formulas without compromise. They are protective of the environment as they maximize the use of renewable, sustainable, and biodegradable ingredients. Kiehl’s proudly stands behind the quality, efficacy, and safety of each of their products.