Working Student – Cosmetic Scientist / Formulator (all genders)

About the role: This role sits within Edeneve , our cosmetics brand built within the Sunday Natural and Yoshi en ecosystem. Edeneve focuses on high-quality skincare with a strong emphasis on natural ingredients, transparency, and modern formulation science. We are looking for a Working Student in Cosmetic Science (all genders) to join our formulation and R&D team on-site in Berlin. This role is hands-on and lab-focused, offering you the opportunity to take concepts from the lab bench directly toward market-ready products while working alongside senior formulation experts. So, what can you expect to work on? Formulation Development: Assist in developing and optimizing skincare formulations with an emphasis on natural, active ingredients. Hands-on Lab Work: Perform formulation trials, batch preparation, and sample creation in our laboratory. Testing & Quality Control: Conduct stability tests, compatibility studies, and baseline quality assurance checks. Raw Material Evaluation: Support the assessment of active ingredients, functional raw materials, and green alternatives. PIF & Compliance Documentation: Maintain precise experimental documentation and technical specifications required for Product Information Files (PIFs). Lab Standards: Help maintain laboratory instruments (pH meters, viscometers, centrifuges) and uphold clean lab operations. GLP Adherence: Ensure all laboratory procedures strictly follow Good Laboratory Practice (GLP) and safety standards. Cross-Functional Work: Collaborate with regulatory managers, product development leads, and external testing labs. What you offer us Currently enrolled in a degree program in Cosmetic Science, Chemistry, Pharmaceutical Sciences, or a related field. Initial practical or academic experience working in a formulation or chemistry lab setting. Fundamental understanding of GLP/GMP guidelines and lab equipment operation. Solid understanding of cosmetic formulation chemistry, particularly skincare emulsions and serums. Passion for green chemistry, clean beauty, and sustainable active ingredients. Structured, detail-oriented, and meticulous working style. Availability for regular, part-time on-site work in our Berlin laboratory. Fluent in English; German or other language skills are a plus. What does Yoshi en offer Hands-on R&D Experience: Real laboratory work on live product pipelines and formulation launches. Mentorship: Close collaboration with experienced industry scientists and senior formulators. Product Discounts: Generous employee discounts across all Yoshi en & Edeneve product lines. Paid Leave: 28 days of paid vacation per year plus up to 5 additional off-days between Christmas and New Year. Health & Transit: Urban Sports Club membership allowance and BVG public transport subsidy. Modern Workspace: Located at Grasblau in Berlin — a bright, sustainable office and lab space with unlimited organic tea and superfoods.