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I simply wont go a day without it.

Best scalp serums collage

Collage: Gabrielle Langdon; Photos: Courtesy of brand and original image byGlamourstaff

Ahead are the tried-and-true options we recommend.

Whats the difference between hair oil and a scalp serum?

Should you apply scalp serum to wet or dry hair?

The Ordinary Multi-Peptide Serum

Original video byGlamourcommerce writer Alanna Martine Kilkeary

Can scalp serums help hair growth?

have been testing several of these serums for years.

Im no stranger to this feeling.

The Ordinary MultiPeptide Serum for Hair Density PeptidePowered Formula for Thicker Fuller Looking Hair

Original image byGlamourcommerce writer Alanna Martine Kilkeary

This treatment is not for the faint of heart (scalp?)

as I found it to be quite effective but I can only use it about once a week.

It absorbs rather quickly and really improves any cracked or flaky areas that could use some TLC.

The Ordinary MultiPeptide Serum

Original image byGlamourcommerce writer Alanna Martine Kilkeary

But a hydrating scalp serum can help kick-start the process.

Instead it was much smoother and fresh, which made it easier to style.

I definitely would recommend this pick if your hair is feeling extra dryespecially in sub 40-degree weather!

The Inkey List Salicylic Acid Oily Scalp Treatment

Original video byGlamourcommerce writer Alanna Martine Kilkeary

It has a lot of lofty claims, so I was apprehensive about how well it could actually work.

Although it can take some time to see results, take it from me, its worth it.

That said, once dry they dont leave behind any residue or semblance of oiliness.

The INKEY List Salicylic Acid Oily Scalp Treatment

Original image byGlamourcommerce writer Alanna Martine Kilkeary

The spray format is also convenient to apply.

It feels super nourishing on the scalpalmost a cooling sensationand dried incredibly quickly.

GlamourcontributorBrigitt Earleyput this one to the test and has a few tips.

The INKEY List Salicylic Acid Oily Scalp Treatment

Original image byGlamourcommerce writer Alanna Martine Kilkeary

It doesnt leave strands at all oily, so dont worry about your fresh blowout.

My favorite part has to be the applicator.

Not to mention I also love the smell!

Eva NYC H2-Whoa Hydrating 3-in-1 Scalp Serum

Original video byGlamourcommerce writer Alanna Martine Kilkeary

And hes not wrong.

I tested this product for a week and my hair simply drank it up.

It didnt weigh down my roots at all, she said of her trial.

Image may contain Face Head Person Accessories Jewelry Necklace Body Part Neck Adult Photography and Portrait

Original image byGlamourcommerce writer Alanna Martine Kilkeary

This serum keeps that area hydrated and adds some shine to my strands.

The areas along my hairline that were thinning now have new growth and are less gray.

The areas around my crown that were thinning have more density.

Image may contain Face Head Person Body Part Neck Accessories Jewelry Necklace Photography Portrait and Adult

Original image byGlamourcommerce writer Alanna Martine Kilkeary

Overall, my hair is stronger and less prone to breakage.

Even my hair stylist has noticed the difference.

For makeup artist andGlamourcontributorAmanda Tralle, its a non-negotiable in her routine.

Act + Acre Cold Processed Stem Cell Scalp Serum

Original video byGlamourcommerce writer Alanna Martine Kilkeary

It really does help take the itch away and I like to use it every night, she says.

But I love that its a thinner serum and doesnt make my hair look oily, she says.

Act  Acre Cold Pressed Stem Cell Scalp Serum

Original image byGlamourcommerce writer Alanna Martine Kilkeary

Act  Acre Cold Pressed Stem Cell Scalp Serum

Original image byGlamourcommerce writer Alanna Martine Kilkeary

Nutrafol Hair Serum

Nutrafol Hair Serum

Original image byGlamourcontributor Brittany Loggins

Nutrafol Hair Serum

Original image byGlamourcontributor Brittany Loggins

Isdin Lambdapil Hair-Density Leave-In Lotion

Original video byGlamour contributor Brittany Loggins

Vegamour Gro Serum

Original video byGlamourcontributor Brigitt Early

Vegamour GRO Serum

Original image byGlamourcontributor Brigitt Early

Vegamour GRO Serum

Original image byGlamourcontributor Brigitt Early

IGK Sponsored Hair Density Scalp Treatment

Original video byGlamourcommerce writer Alanna Martine Kilkeary

IGK Sponsored Hair Density Scalp Treatment

Original image byGlamourcommerce writer Alanna Martine Kilkeary

IGK Sponsored Hair Density Scalp Treatment

Original image byGlamourcommerce writer Alanna Martine Kilkeary

The Rootist Densifying & Thickening Serum

Original video byGlamourcommerce writer Alanna Martine Kilkeary

The Rootist Densifying  Thickening Serum for Thinning Hair

Original image byGlamourcommerce writer Alanna Martine Kilkeary

The Ordinary MultiPeptide Serum for Hair Density PeptidePowered Formula for Thicker Fuller Looking Hair

Original image byGlamourcommerce writer Alanna Martine Kilkeary

Augustinus Bader The Scalp Treatment

Original video byGlamourcontributor Brigitt Early

Augustinus Bader The Scalp Treatment

Original image byGlamourcontributor Brigitt Early

Augustinus Bader The Scalp Treatment

Original image byGlamourcontributor Brigitt Early

Kérastase Initialiste Scalp & Hair Serum

Original video byGlamoursenior commerce editor Jenifer Calle

Living Proof Scalp Care Density Serum

Original image byGlamourcommerce writer Alanna Martine Kilkeary

Image may contain Body Part Finger Hand Person Bottle Lotion Cosmetics Perfume Machine and Screw

Original image byGlamourcommerce writer Alanna Martine Kilkeary

Fable and Mane Amla Soothing Serum

Kerastase Nutritive Hydrating Scalp Serum