Biotin Hair Thickening Serum for Men and Women – Intense Strengthening Treatment Product with Natural Botanical Oil Blend to Help Boost Thin Hair – Repair Thinning Hair, Increase Volume and Shine

Price: $19.99 - $14.99
(as of Mar 01, 2026 00:57:15 UTC – Details)

Product description

Explore Our Biotin Range for Thicker Feeling Hair

Add to Cart

Add to Cart

Add to Cart

Add to Cart

Customer Reviews

4.4 out of 5 stars 5,931

4.4 out of 5 stars 44,920

4.4 out of 5 stars 7,025

4.3 out of 5 stars 867

Price

$14.99$14.99

$26.99$26.99

$9.49$9.49

$8.99$8.99

INTENDED USE

Restore damage, boost volume

Deep cleaning, thicker feeling

Intense moisture and hydration

Guard against heat damage

ADDITIONAL BENEFITS

Thicker looking hair

Extra shine and hydration

Sleek appearance, soft hair

Sleek and smooth hair

KEY INGREDIENTS

Biotin, lavender oil

Biotin, collagen, spirulina

Biotin, keratin, argan oil

Biotin, argan oil

RESOLVES PROBLEM

Dry, thinning and damaged hair

Thin and fine hair

Dehydrated and thinning hair

Blowdry and sun damage

FOR HAIR TYPE

Broken, dry, thinning

Fine, thinning, limp

Thinning, dry, brittle

Sensitive, damage prone

BOOSTS VOLUME

With leave-in coating

Washes out, biotin remains

Washes out, biotin remains

With leave-in coating

Bellisso Hair Care Collections

Add to Cart

Add to Cart

Add to Cart

Add to Cart

Add to Cart

Add to Cart

Customer Reviews

4.4 out of 5 stars 44,920

4.4 out of 5 stars 44,920

4.4 out of 5 stars 44,920

4.4 out of 5 stars 44,920

4.4 out of 5 stars 44,920

4.4 out of 5 stars 44,920

Price

$26.99$26.99

$24.99$24.99

$24.99$24.99

$24.99$24.99

$24.99$24.99

$26.99$26.99

BEST FOR

Thicker feeling hair

Fighting dandruff

Strengthening weak hair

Incredible dazzling shine

Soothing itchy scalps

Toning bleached hair

HAIR ISSUE

Hair is thinning or very fine

Itchy scalp with flakes

Broken hair, brittle and dry

Dull hair with no shine

Flaky scalp with dandruff

Yellow or bronze imbalance

BENEFITS

More volume for thin hair

Balance scalp Ph

Less breakage & split ends

Soft & manageable hair

Less irritation & itch

Less bronze & gold shimmer

KEY INGREDIENTS

Biotin, collagen, spirulina

Apple cider vinegar, collagen

Keratin, silk protein, argan

Argan oil, aloe, chamomile

Tea tree oil, silk protein

Vitamin B5, green tea extract

FOR HAIR TYPE

Thinning

All

Damaged

Dry

All

Bleached, silver, gray

Sleek, Shining Hair

Turns heads thanks to Bellisso’s advanced biotin hair serum. Our biotin hair oil nourishes to increase shine, boost softness and help repair damage.

For Hollywood Looks

This advanced serum is formulated by salon experts. Our leave-in serum boosts the volume of your hair by increasing the space between each strand.

Never Tested on Animals

Our hair thickening products are never tested on animals. Better still, this biotin serum contains a blend of lavender and evening primrose oil.

For All Types of Hair

No matter if you’ve got wavy, straight, curly or even frizzy hair, Our biotin serum is the smart choice for people who care about their appearance.

How should I use the serum?

Apply two to three pumps of serum to wet hair and leave in overnight for best results. Massage the serum thoroughly through your hair using your fingertips, ensuring to cover from roots to tips.

Is this serum safe to use on color treated hair?

Yes. Bellisso biotin serum is safe for all types of hair, including color treated and bleached hair. It is specially formulated so won’t cause dyed hair to run.

How often do I need to use the serum?

For best results, we suggest using Bellisso biotin serum daily after your shower. The blend of plant oils and biotin work best with consistent use to help boost volume and shine.

Should I wash the serum out, or leave it in?

Do not wash the serum out of your hair. Bellisso biotin hair repair serum is formulated to be left in your hair. For best results, massage the serum into your hair and leave in overnight.

How much serum do I need to use?

For best results, we recommend that you apply about two to three pumps of serum directly to your hair and use your fingertips to massage thoroughly from root to tip.

Package Dimensions ‏ : ‎ 4.61 x 1.73 x 1.69 inches; 5.29 ounces
UPC ‏ : ‎ 765066671174
Manufacturer ‏ : ‎ BELLISSO
ASIN ‏ : ‎ B08Z5GK3HX
Best Sellers Rank: #12,170 in Beauty & Personal Care (See Top 100 in Beauty & Personal Care) #120 in Hair Treatment Oils
Customer Reviews: 4.4 4.4 out of 5 stars (5,931) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });

THICKER HAIR: People love how Bellisso’s biotin hair serum gives them the appearance of thicker hair. By coating each strand with a blend of botanical based hair oil and salon grade biotin, our hair thickener serum boosts volume, giving you thicker feeling locks that are sure to turn heads
REPAIR DAMAGE: Our hair thickening products for women and men are also professionally recognized for how they help repair damage from exposure. Bellisso’s hair strengthening products can give dry, brittle split ends new life. When you need nourishment from root to tip, this biotin hair thickening serum is the answer
SALON GRADE: It’s time for your old biotin hair oil to step aside as you upgrade your hair treatment to a luxurious biotin serum. Our thickening hair products have been developed in close consultation with salon professionals. When you need a professional hair thinning treatment women and men trust, Bellisso is the solution
CRUELTY FREE: Make hair thickening products for men and women that are tested on animals a thing of the past. Bellisso’s biotin oil blend is free from animal cruelty and testing. What’s more, our serum with biotin for hair is sulfate and paraben free, making it kinder on your body
INCREDIBLE SHINE: More than simply a thinning hair treatment women and men use everyday, Bellisso biotin serum has been engineered for dazzling shine. With botanical extracts including sunflower, lavender and evening primrose oil, this advanced hair volumizer helps leave you with a smooth and manageable appearance