The Science of QUALASH® – How Our Lash Serum Works

Driven by Science. Trusted by Decades.

Our trusted Lash, Brow, and Hair Serums are produced in a certified European facility with over 35 years of expertise in high-precision cosmetic manufacturing, fully compliant with the European Union’s strict cosmetic safety regulations. The entire production process is carried out under sterile, pharmaceutical-grade conditions to ensure the highest level of safety, quality, and consistency.

At the heart of every formula lies our signature QUA-X Complex® — a breakthrough blend of peptides, vitamins, and plant-based actives designed to target follicle strength, boost growth, and enhance lash and brow density over time. Developed through rigorous testing and backed by real science, QUA-X Complex® is the core of what makes QUALASH® truly effective.

QUA-X Complex® — A Patented Growth System for Lashes & Brows

QUA-X Complex® is the core innovation behind every QUALASH formula.

Developed as a multi-path growth support system, QUA-X Complex® works by optimizing the lash and brow follicle environment — supporting the natural growth cycle in a controlled, cosmetic-safe way.

Rather than relying on a single active ingredient, QUA-X Complex® combines four complementary growth-support mechanisms, carefully balanced to promote visibly fuller, stronger, and healthier-looking lashes and brows over time — without disrupting the skin’s natural physiology.

This advanced system is designed to:

support the natural renewal phase of lashes and brows
strengthen the follicle environment
reduce breakage and thinning
improve density and resilience with consistent use

Peptides play a supporting role within QUA-X Complex® — enhancing communication within the skin and reinforcing structural strength — but they are only one element of a broader, innovation-driven formulation strategy.

Every QUALASH formula powered by QUA-X Complex® is developed under strict European cosmetic safety standards, ensuring performance, consistency, and long-term tolerance, even for sensitive eye-area skin.

“Peptides show synergy and work well together, so I would look for a serum with a combination of peptides.”

— Dr. Kiran Mian, dermatologist, Hudson Dermatology and Laser Surgery (Vogue, April 2025)

QUALASH® Advanced Eyelash Growth Serum

Designed for daily use to improve lash strength, density and resilience over time.

QUALASH® Advanced Eyelash Serum is formulated for consistent, everyday application and long-term lash conditioning.

The lightweight formula absorbs quickly and works along the lash line to support healthier-looking lashes that feel stronger, more flexible, and less prone to breakage.

With regular use, lashes appear:

more resilient to daily stress
smoother and better conditioned
visibly fuller and more even
easier to style and maintain

The serum is designed to integrate seamlessly into your evening routine and is suitable for prolonged use, including on sensitive eye-area skin.

QUABROW® Advanced Eyebrow Serum

For visibly fuller, defined brows – powered by peptides

Key ingredients:

Biotinoyl Tripeptide-1 – Strengthens hair from the root and supports visibly thicker, fuller brows.

Octapeptide-2 – Boosts cell regeneration and stimulates healthier-looking brow growth.

Arginine – Essential amino acid that helps fortify and nourish brow follicles.

Panax Ginseng Root Extract – Stimulates and revitalizes follicles for enhanced density and resilience.

Panthenol (Vitamin B5) – Deeply hydrates and conditions to help reduce breakage and improve brow texture.

QUALASH® Advanced BOOST MASCARA

Mascara redefined – caring formula powered by lash science

Key ingredients:

Biotinoyl Tripeptide-1 – Strengthens lashes at the root, helping reduce breakage and promote a thicker, more resilient appearance.
Argania Spinosa Kernel Oil – Rich in omega fatty acids and vitamin E, this luxurious oil deeply nourishes and enhances lash flexibility.
Opuntia Ficus-Indica Seed Oil – A rare botanical extract known for its antioxidant power and hydrating properties, promoting softness and shine.
Hydrolyzed Rhodophycea Extract – A marine-derived active that supports lash conditioning and maintains a healthy lash environment.
Tocopheryl Acetate (Vitamin E) – A protective antioxidant that helps shield lashes from daily stress and environmental damage.

Hamilton test report for quacosmetics llc’s advanced eyelash serum 3.5 ml, detailing microbiological analysis results and compliance with various international standards.

Independent Laboratory Testing & Quality Verification

Every QUALASH® formula undergoes independent laboratory testing to verify microbiological purity, formulation stability, and overall product safety.

All tests are conducted in accordance with recognized international standards, ensuring that each batch meets strict quality requirements before release. This process helps confirm that our products are suitable for use in the sensitive eye area and maintain consistent performance throughout their shelf life.

Laboratory verification is an essential part of our quality control system — not an afterthought.

The vegan society certificate of registration for quacosmetics llc, featuring a clean white background with teal text and green accent bars.

Certified Vegan & Ethically Registered

QUALASH® products are officially registered with The Vegan Society, confirming that our formulations meet established vegan standards.

This certification verifies that our products contain no animal-derived ingredients and are developed in line with clearly defined ethical criteria. Vegan registration reflects our commitment to responsible formulation choices and transparency — without compromising on quality or performance.

Ethical standards are integrated into our product development process from formulation to final approval.