Nu-Cil & BioStim Range

The Obagi Nu-Cil & BioStim range is formulated to promote natural lash, brow, and hair growth. Powered by biotin, peptides, and botanical extracts, these serums strengthen and condition at the follicle level — without the side effects associated with prostaglandin-based alternatives.

Clinically tested, dermatologist developed.

nu-cil eyelash regrowth before and after

Clinically Proven Lash, Brow & Hair Growth Serums

Thinning lashes, sparse brows, and hair loss are more common than most people realise — and they affect confidence far more than people admit. The Obagi Medical Nu-Cil range uses a proprietary NouriPlex Technology and BioStim Complex to deliver clinically proven results: fuller lashes, thicker brows, and denser hair growth — without the risks, cost, or commitment of extensions, microblading, or surgical intervention.

These aren't cosmetic cover-ups. Nu-Cil works at the follicle level to extend the growth phase, strengthen each strand, and reduce shedding. Results are visible from as early as 2 weeks, with significant improvement at 8–12 weeks. For patients also targeting fine lines and skin firmness around the eye area, the Nu-Cil Eyelash Serum pairs perfectly with the ELASTIderm Eye Treatment Complex.

Obagi Nu-Cil Clinical Results

93%

reported improvement in eyelash appearance

89%

said their eyelashes looked thicker

8 Wks

to fuller, thicker brows

Clinician's Recommendation

Nu-Cil is the only lash and brow serum I recommend — the clinical data is strong and the results I see in patients are consistent. The eyelash serum is the most popular, but the eyebrow serum has been a revelation for patients with over-plucked or age-thinned brows. The BioStim Scalp Serum is newer but the early results for thinning hair are genuinely impressive. All three are prostaglandin-free, making them suitable for patients who can't tolerate prescription lash serums.

— Mark Taylor, MSurg, INP, RMN

Which Nu-Cil Product Is Right for You?

  • Eyelash Enhancing Serum

    Results from: 8 weeks
    Full results: 12 weeks (90 days)

    Clinically proven to increase lash length, thickness, and density. 93% of participants reported improvement. Reduces lash shedding and strengthens existing lashes. Apply nightly to the upper lash line — one stroke per eye is all you need. Prostaglandin-free.

    Price: £125 (3-month supply)

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  • Eyebrow Boosting Serum

    Results from: 8 weeks
    Full results: 12 weeks

    Fuller, thicker brows in as little as 8 weeks. The precision applicator allows targeted delivery to sparse patches and areas of over-plucking. Nourishes and conditions at the follicle level. Ideal for age-related brow thinning or restoration after years of over-grooming.

    Price: £125 (3+ month supply)

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  • BioStim Scalp Serum

    Results from: 2 weeks
    Full results: 12 weeks (3 months)

    Clinically proven to deliver visibly fuller, denser hair in just 3 months. The BioStim Complex delivers biotin, peptides, and amino acids directly to the scalp to promote follicle health, fortify hair from the root, and strengthen existing strands. Lightweight, non-greasy formula.

    Price: £135 (2-month supply)

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How to Use Nu-Cil

1

Cleanse

Remove all makeup, contact lenses, and cleanse thoroughly. Skin and lashes must be completely clean and dry before application.

2

Apply

Lashes: One stroke along the upper lash line, like eyeliner. Do not apply to the lower lashes — the serum transfers naturally when you blink.
Brows: Apply directly to sparse areas using the precision tip.
Scalp: Part hair into sections and apply serum directly to the scalp. Massage gently.

3

Be Consistent

Apply every night. Results are cumulative — missing nights delays progress. Most patients see visible improvement from 8 weeks with full results at 12 weeks. Continue use to maintain results.

Frequently Asked Questions About Nu-Cil

How long until I see results from Nu-Cil?

Most patients notice improvement from 8 weeks, with significant results at 12 weeks (90 days). The BioStim Scalp Serum can show early signs of improvement from as early as 2 weeks. Results are cumulative — the longer you use it, the fuller and stronger your lashes, brows, or hair become. Consistency is essential. Stopping use will gradually return growth to its natural baseline over several months.

Is Nu-Cil safe? Does it contain prostaglandins?

Nu-Cil is prostaglandin-free, which sets it apart from many prescription lash growth serums. Prostaglandin analogues (like bimatoprost) can cause side effects including iris colour change, periorbital darkening, and orbital fat loss. Nu-Cil uses a peptide-based approach (NouriPlex Technology) that is well-tolerated and doesn't carry these risks. It is dermatologist-tested, ophthalmologist-tested, hypoallergenic, and suitable for contact lens wearers.

Can I use Nu-Cil with lash extensions?

Yes — many patients use Nu-Cil alongside lash extensions to strengthen their natural lashes underneath. However, you should apply the serum to the upper lash line (not directly on the extensions) and check with your lash technician that the formula won't affect the adhesive bond. Many patients eventually stop extensions entirely as their natural lashes become fuller with Nu-Cil use.

How does the BioStim Scalp Serum work?

The BioStim Scalp Serum delivers a potent blend of biotin, peptides, and amino acids directly to the scalp to promote hair follicle health, fortify hair from the root, and strengthen existing strands. It works synergistically to promote scalp health, fortify hair follicles, and strengthen strands from the root. The lightweight, non-greasy formula absorbs quickly without residue. Clinically proven to deliver visibly fuller, denser hair in 3 months with results as early as 2 weeks.

Do I need to keep using Nu-Cil to maintain results?

Yes. Like all growth serums, Nu-Cil extends and enhances the natural growth cycle rather than permanently changing it. If you stop using the product, your lashes, brows, or hair will gradually return to their natural growth pattern over several months. Many patients reduce to every-other-night application once they've achieved their desired results as a maintenance protocol.

How long does each product last?

The Eyelash Enhancing Serum (3ml) lasts approximately 3 months with nightly use. The Eyebrow Boosting Serum (5ml) lasts 3+ months. The BioStim Scalp Serum (60ml) lasts approximately 2 months depending on how much scalp coverage is needed. This makes Nu-Cil cost-effective compared to ongoing lash extensions (typically £40–60/month for infills) or microblading touch-ups.

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Not Sure Where to Start?

Two routes, both free. Take our 90-second skin quiz for an instant expert-built routine, or book a consultation with Mark for a conversation first.