Pioneering the Future of Cosmetic Engineering

Pioneering the Future of Cosmetic Engineering

Pioneering the Future of Cosmetic Engineering

We help brands and professionals build successful cosmetic products.

We help brands and professionals build successful cosmetic products.

We help brands and professionals build successful cosmetic products.

Golden serum droplet captured mid-impact in a glass dish beside a sleek dropper, visually expressing formulation precision with overlaid messaging: 'From Concept to Compliance', 'Formulation Intelligence', and 'Strategic by Design'.
Golden serum droplet captured mid-impact in a glass dish beside a sleek dropper, visually expressing formulation precision with overlaid messaging: 'From Concept to Compliance', 'Formulation Intelligence', and 'Strategic by Design'.

Formulation Intelligence

Formulation Intelligence

Strategic by Design

Strategic by Design

From Concept to Compliance

From Concept to Compliance

Golden serum droplet captured mid-impact in a glass dish beside a sleek dropper, visually expressing formulation precision with overlaid messaging: 'From Concept to Compliance', 'Formulation Intelligence', and 'Strategic by Design'.

Formulation Intelligence

Strategic by Design

From Concept to Compliance

Coseer is a cosmetic engineering consultancy combining science, strategy, and execution.

Coseer is a cosmetic engineering consultancy combining science, strategy, and execution.

Coseer is a cosmetic engineering consultancy combining science, strategy, and execution.

We guide product development from concept to launch through formulation direction, claims strategy, regulatory alignment, and lab coordination.

We guide product development from concept to launch through formulation direction, claims strategy, regulatory alignment, and lab coordination.

We guide product development from concept to launch through formulation direction, claims strategy, regulatory alignment, and lab coordination.

Golden liquid serum being dispensed into a ripple-textured dish, accompanied by a sleek applicator — evoking sensorial refinement, formulation control, and premium cosmetic engineering.
Golden liquid serum being dispensed into a ripple-textured dish, accompanied by a sleek applicator — evoking sensorial refinement, formulation control, and premium cosmetic engineering.
Golden liquid serum being dispensed into a ripple-textured dish, accompanied by a sleek applicator — evoking sensorial refinement, formulation control, and premium cosmetic engineering.

What We Do

We support brands and professionals at every stage of product development, from early concepts to launch-ready cosmetic products.

Concept-to-shelf product developmen

Strategic direction for formulation

Claims, compliance, and lab oversight

Who We Support

From new founders to global teams, we support decision-makers driving product development.

Founders & Entrepreneurs

Expert input to shape ideas into scalable products.

Founders & Entrepreneurs

Expert input to shape ideas into scalable products.

Founders & Entrepreneurs

Expert input to shape ideas into scalable products.

Career Changers & Beauty Professionals

Guided learning for a confident move into development.

Career Changers & Beauty Professionals

Guided learning for a confident move into development.

Career Changers & Beauty Professionals

Guided learning for a confident move into development.

Product Development & Innovation Teams

Support across formulation, production, and claims.

Product Development & Innovation Teams

Support across formulation, production, and claims.

Product Development & Innovation Teams

Support across formulation, production, and claims.

Procurement & Supply Chain Specialists

Improved workflows, better lab coordination.

Procurement & Supply Chain Specialists

Improved workflows, better lab coordination.

Procurement & Supply Chain Specialists

Improved workflows, better lab coordination.

Structure Over Guesswork. Strategy Over Noise.

At Coseer, we help brands make better decisions grounded in science, shaped by strategy, and built to launch with confidence.

“Excellence in cosmetics isn’t luck, it’s engineered.” - Nadia Zarrouk

From Precision Engineering to Cosmetic Excellence

I’m Nadia Zarrouk, a French engineer with a passion for cosmetic science and strategic innovation.

My background spans business strategy, technical craftsmanship at Louis Vuitton, and end-to-end product development at Ingrid Millet, a leading French cosmetic brand.

I co-founded Coseer to help professionals and brands enter the cosmetic space with clarity, confidence, and a methodical approach built for lasting impact.

Portrait of Nadia Zarrouk, co-founder of Coseer, standing confidently with arms crossed, wearing an elegant black blouse with a pearl-embellished collar, alongside the quote: 'It’s not about how fast you launch, it’s about what you build, and how well you build it.
Portrait of Nadia Zarrouk, co-founder of Coseer, standing confidently with arms crossed, wearing an elegant black blouse with a pearl-embellished collar, alongside the quote: 'It’s not about how fast you launch, it’s about what you build, and how well you build it.
Portrait of Nadia Zarrouk, co-founder of Coseer, standing confidently with arms crossed, wearing an elegant black blouse with a pearl-embellished collar, alongside the quote: 'It’s not about how fast you launch, it’s about what you build, and how well you build it.

“It’s not about how fast you launch, it’s about what you build, and how well you build it.”

“It’s not about how fast you launch, it’s about what you build, and how well you build it.”

 Coseer is the Future of Cosmetic Engineering.

We deliver structured product development from concept to market.

Get in touch

 Coseer is the Future of Cosmetic Engineering.

We deliver structured product development from concept to market.

Get in touch

 Coseer is the Future of Cosmetic Engineering.

We deliver structured product development from concept to market.

Get in touch