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
4.5
Rated 4.5 out of 5 stars
13 Reviews

BIOSTIM™ SCALP SERUM

Hair Density Scalp Serum

Regular price $125.00
Excluded from all Discounts

BIOSTIM™ SCALP SERUM

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).
4.5
Rated 4.5 out of 5 stars
Based on 13 reviews
13 reviews
  • Beth
    I recommend this product
    Rated 5 out of 5 stars
    December 17, 2025
    5 Stars

    I have only

    Done

    One

    Application but love how it doesnt make your hair oily and you leave it on 👍🏻

  • Kathleen
    AL, United States
    Verified Buyer
    I recommend this product
    Age 55-64
    Gender Female
    Rated 5 out of 5 stars
    December 14, 2025
    It really works

    I am on my 25th day and had low expectations, but due to my positive results with other Obagi products, I thought I would at least give it a try. The results blow me away. My "wide" scalp is no longer sparse at all. The balding patches at my temples have really filled in, to the point where I no longer notice them, which was something I was very self-conscious about before using this product. Very pleased and I am telling everyone I know about it! I can't believe I have seen results so quickly.

    EffectivenessRated 5.0 on a scale of 1 to 5
  • Joyce M. M.
    TX, United States
    Verified Buyer
    I recommend this product
    Age Over 65
    Gender Female
    Rated 5 out of 5 stars
    December 2, 2025
    Biostim Scalp Serum

    working very well as advertised. I have tried a lot of different products, and this have been the best product.

    EffectivenessRated 5.0 on a scale of 1 to 5
  • Tammy
    I recommend this product
    Rated 5 out of 5 stars
    December 1, 2025
    5 Stars

    Love Obaji products! Cant wait for this to start working!! Haven’t had a week yet.

  • Lydia R.
    TX, United States
    Verified Reviewer
    I recommend this product
    Age 35-44
    Gender Female
    Rated 5 out of 5 stars
    November 29, 2025
    One month progress and I am OBSESSED

    I lost some hair 3 months postpartum and received the serum as a gift. I’m blown away at my one month results! I can tell it’s working and you can see it for yourself. I’m so excited to continue using this product and get my receding hairline back to where it was. I’ll be back for another update in a few months. For reference I’m 35 years old and 6 months postpartum with my 5th child! I encourage anyone with hair loss issues to purchase this incredible serum.

    EffectivenessRated 5.0 on a scale of 1 to 5