Obagi Medical Obagi Nu-Cil® BioStim™ Scalp Serum

Obagi Nu-Cil BioStim Scalp Serum is a clinically proven, root-level treatment designed to combat hair thinning and restore scalp health. Powered by the advanced BioStim™ Complex, this lightweight serum delivers a targeted blend of biotin, peptides, amino acids, and 18 essential hair nutrients directly to the scalp — strengthening follicles, reducing shedding, and promoting visibly fuller, denser hair.

Backed by a 2025 clinical study, results speak for themselves: reduced hair fall in as little as 2 weeks and measurably denser hair within 3 months. Fragrance-free, non-greasy, and suitable for all genders and scalp types.

• Reduces shedding — visibly less wet and dry hair fall in as little as 2 weeks
• Fuller, denser hair — clinically proven results in 3 months
• Strengthens follicles — biotin, peptides & amino acids fortify hair from the root
• Hydrates & balances the scalp — creates an optimal environment for hair growth
• Boosts circulation — massaging the serum in promotes scalp health
• Reduces scalp redness & oiliness — clinically shown to improve overall scalp condition
• Minimises breakage — strengthens strands from root to tip
• Lightweight, non-greasy formula — no residue, suitable for daily use
• Suitable for all — all genders, all scalp types, fragrance-free & dermatologist-tested

Here’s the advanced breakdown of the Obagi Nu-Cil BioStim Scalp Serum:

The Science Behind It

BioStim™ Complex A synergistic multi-pathway formula that targets the key biological factors influencing scalp health and hair resilience — rather than relying on a single active ingredient.

Key Actives & Their Functions:

• Biotin (Biotinoyl Tripeptide-1) — supports keratin production and follicle metabolism
• Amino Acids (Arginine, Acetyl Tyrosine, Ornithine, Citrulline) — essential building blocks for hair structure and strength
• Peptides — signal follicles to strengthen and protect hair strands
• Caffeine — stimulates scalp circulation and may help extend the hair growth phase
• Panthenol (Provitamin B5) — deep hydration and strand flexibility
• Niacinamide (Vitamin B3) — improves scalp barrier function and reduces inflammation
• Panax Ginseng Root Extract — antioxidant protection and circulation support
• Oleanolic Acid — helps inhibit DHT, a key contributor to hair thinning
• Pumpkin Seed Extract — supports follicle health and hormonal balance
• Zinc Gluconate — regulates scalp oil production and supports follicle function

Clinical Results (2025 24-Week Study):

• 52% improvement in hair volume
• 29% reduction in scalp redness
• 22% reduction in scalp oiliness
• Visible reduction in shedding from week 2

How It Works — The Four Pathways:

1. Hydration & Repair — restores the scalp’s outermost barrier layer
2. Nutrient Delivery — feeds follicles with vitamins and micronutrients directly at the root
3. Circulation Boost — massage application enhances blood flow to follicles
4. Structural Fortification — peptides and amino acids reinforce hair fibre integrity

1. Apply once daily — morning or night, whichever suits your routine
2. Part the hair and dispense the serum directly onto the scalp
3. Massage gently with fingertips to ensure even distribution and boost circulation
4. Leave in — do not rinse. Allow the serum to absorb fully and air-dry completely
5. Style as usual once absorbed

Good to Know:

• Can be applied to either dry or damp hair
• No residue — lightweight formula won’t weigh hair down
• For best results, use consistently daily — visible shedding reduction from week 2, fuller denser hair by month 3

Who Can Use It:

• Suitable for all genders and all scalp types
• Fragrance-free and dermatologist-tested

A unique blend of biotin, panthenol, sodium hyaluronate and a proprietary lipid compound

Biotin
Supports the natural production of keratin.

Proprietary Lipid Compound
Helps address the appearance of patchy, over-tweezed eyebrows.

Sodium Hyaluronate
A form of hyaluronic acid that attracts and retains water to both hydrate and improve the appearance of thickness and density of the eyebrow.

Panthenol
Also known as Vitamin B5, helps with hair conditioning, moisture and texture improvement.