BIOSTIM™ SCALP SERUM
BIOSTIM™ SCALP SERUM
BIOSTIM™ SCALP SERUM
BIOSTIM™ SCALP SERUM
BIOSTIM™ SCALP SERUM
BIOSTIM™ SCALP SERUM
BIOSTIM™ SCALP SERUM
BIOSTIM™ SCALP SERUM
BIOSTIM™ SCALP SERUM
BIOSTIM™ SCALP SERUM
BIOSTIM™ SCALP SERUM
BIOSTIM™ SCALP SERUM
NEW
4.3
Rated 4.3 out of 5 stars
36 Reviews
OBAGI NU-CIL® ,

BIOSTIM™ SCALP SERUM

Hair Density Scalp Serum

$125.00
Excluded from all Discounts
BIOSTIM™ SCALP SERUM

BIOSTIM™ SCALP SERUM

Free 30-Day Returns

Best for
Skin Types: Normal to OilyNormal to DryCombination

Obagi Nu-Cil BioStim Scalp Serum promotes optimal scalp health and fortifies hair follicles for visibly denser, fuller hair. Powered by clinically proven actives, the BioStim™ Complex targets key factors that influence scalp health and hair resilience, delivering a comprehensive, root-level approach to hair revitalization.

  • Hydrates, soothes, repairs, and balances the scalp to create an optimal environment for hair growth
  • Strengthens, nourishes, protects hair follicles and boosts circulation as you massage the scalp for visibly fuller, denser hair

In less than 6 months, clinically proven* to:

  • Significantly improve hair volume by 52%**
  • Significantly reduce scalp redness by 29%**
  • Significantly reduce scalp oiliness by 22%**

*Results based on a 2025 24-week clinical test. Data on file at Obagi Cosmeceuticals LLC.
**When compared to the untreated control group.

Backed By Clinical Trials

97%
reduction in the amount of dry fallen hair after 24 weeks*
74%
increase in scalp hydration after 24 weeks*
90%
of participants agreed their hair looked healthier after 24 weeks*
90%
of participants agreed the serum reduced hair breakage after 24 weeks*
Baseline* After 12 Weeks*
*Results based on a 2025 24-week clinical test. Photos have not been retouched. Individual results may vary. Data on file at Obagi Cosmeceuticals LLC. **When compared to the untreated control group.
Baseline After 12 weeks*
*Results based on a 2025 24-week clinical test. Photos have not been retouched. Individual results may vary. Data on file at Obagi Cosmeceuticals LLC. **When compared to the untreated control group.
Baseline After 12 weeks*
*Results based on a 2025 24-week clinical test. Photos have not been retouched. Individual results may vary. Data on file at Obagi Cosmeceuticals LLC. **When compared to the untreated control group.
Baseline After 12 weeks*
*Results based on a 2025 24-week clinical test. Photos have not been retouched. Individual results may vary. Data on file at Obagi Cosmeceuticals LLC. **When compared to the untreated control group.

How To Use

  • Apply serum once daily. Part hair and dispense directly onto the scalp. Gently massage with fingertips to ensure even distribution and boost circulation. Can be applied to either dry or damp hair. Do not rinse.
  • Can be applied in the morning or at night. Allow serum to absorb fully and air-dry completely. This is a leave-in product, style your hair as usual. Apply daily for best results.



Storage

  • Keep out of direct sunlight.
  • Store at controlled room temperature 15°−25°C (59°−77°F).
4.3
Rated 4.3 out of 5 stars
Based on 36 reviews
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36 reviews
  • Kelsey N.
    FL, United States
    Verified Buyer
    I recommend this product
    Age 35-44
    Gender Female
    Rated 5 out of 5 stars
    May 18, 2026
    Visible Results

    Seeing hair growth and fullness after two months of use!!

    EffectivenessRated 5.0 on a scale of 1 to 5
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  • Geraldine H.
    CA, United States
    Verified Buyer
    I recommend this product
    Age Over 65
    Gender Female
    Rated 5 out of 5 stars
    May 16, 2026
    Scalp serum

    Live it & it helped with my scalp & hair growth. Amazing product..

    EffectivenessRated 5.0 on a scale of 1 to 5
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  • Hafiza
    I recommend this product
    Rated 5 out of 5 stars
    May 15, 2026
    5 Stars

    Loved it its very hydrating without leaving scalp greasy

    Was this helpful?
  • Jeffry F.
    TX, United States
    Verified Buyer
    I recommend this product
    Age 55-64
    Gender Male
    Rated 5 out of 5 stars
    May 10, 2026
    So far..So good

    I just started using the product so it’s a bit early to tell if I will see any hair regeneration/growth. I can attest that the serum is of good heft, easy to apply to target areas, and leaves my scalp and surrounding hair feeling and appearing good…no sticky residue or flaking. So far I like the product and hope I see positive results.

    EffectivenessRated 4.0 on a scale of 1 to 5
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  • Vikki D.
    LA, United States
    Verified Buyer
    I recommend this product
    Gender Female
    Rated 5 out of 5 stars
    May 8, 2026
    Nice

    I love this one so much!! I am hard on my hair - always seems to be up in ponytail because I work out and play tennis alot.

    EffectivenessRated 5.0 on a scale of 1 to 5
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