Formulated in South Korea

The volume your hair used to have.

The serum with a built-in applicator brush that makes hair look denser from the roots. 10 seconds in the morning, no rinsing.

Discover the serum 4.8/5 · 1,243 reviews
Formulated in South Korea
90-day guarantee
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Volume & Density Serum

4.8/5 $39.90
More volume at the roots Visibly denser-looking hair Longer, fuller-looking lengths
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Our products

View all
Wachstums-Shampoo Wachstums-Shampoo $29.90$39.90
Hair, Skin & Nails Gummies Hair, Skin & Nails Gummies $29.90$39.90
Kürbiskern-Kapseln Kürbiskern-Kapseln $29.90$39.90
Before
Week 12

Hair that gets its volume back

With age, stress or hormonal changes, hair grows back finer and barely reaches past the shoulders. Masks and oils stay on the lengths. Our serum is applied right at the roots, thanks to its built-in brush.

See the results

Loved by 3000+ customers

Sylvana, 33
Verified purchase

After 13 weeks with Cosmelia's Growth & Density Serum, I barely recognize myself 😍 My part looks so much denser and my roots look so much fuller. Finally a serum that actually delivers!

Sabine, 47
Verified purchase · Volume

Over the years my hair lost more and more of its fullness. Even after blow-drying, it would fall flat again in no time. I just wanted the volume I used to have, and to feel good wearing my hair down again.

Petra, 52
Verified purchase · Length

My hair had become so thin that my scalp showed through more and more. I hardly dared to wear certain hairstyles anymore. I just wanted fuller, denser hair again, without trying to hide my part every morning.

Claudia, 44
Verified purchase · Density

I've always wanted long hair, but mine somehow never grew past my shoulders. It was thin and fragile, and the ends kept breaking. My wish was to finally have longer hair without giving up volume.

Birgit, 56
Verified purchase · Texture

Since menopause my hair has changed a lot. My part kept getting wider and my hair felt nowhere near as full as it used to. Everyone said it was normal at my age. But it still matters to me to have beautiful, full hair again.

The routine

The Cosmelia routine

Three simple steps that work perfectly together.

Shop the hair ritual set
Wachstums-Shampoo
Step 1 · WashVolumizing Shampoo

Gently cleanses and adds fullness.

N°1 Koreanisches Wachstums- & Dichte-Serum 🇰🇷
Step 2 · ApplyVolume & Density Serum

10 seconds at the roots, every morning.

Kürbiskern-Kapseln
Step 3 · From withinPumpkin Seed Capsules

Support from within.

Our story

We created the care we were looking for ourselves.

Why are there serums and routines for the face – but almost nothing for the scalp? That question gave birth to Cosmelia: care that works where volume begins.

Read our story