Master Thesis in Sun Protection (m/f/d) 1

WELCOME TO BASF

At Care Chemicals, we carry the passion to care. Our people stand as our most prized asset, and we cultivate a culture of compassion, support, and growth. Through this, we empower our team to excel both personally and professionally. United as one, we are dedicated to pioneering sustainable, digitized, and innovative solutions for a brighter future. Nourishing lotions, mild shampoos, protective sunscreens – these products, along with environmentally friendly detergents and high-performance cleaners, feature ingredients crafted by our Care Chemicals division. Our portfolio extends to plant protection solutions, technical applications in construction chemistry, raw materials for the coatings industry and digital services for our customers. Collaborating with global clients, we engineer innovative solutions with a growing emphasis on sustainable sourcing. Let’s sketch a better future together!

What You Can Expect

The Sun Protection unit at the Grenzach site is the global competence center for cosmetic sun protection within BASF. We focus on the development of innovative ingredients, particularly new UV filters, and their application in sun protection formulations. We welcome your support as part of an internship lasting six to eight months, which can also be completed in the context of a master’s thesis, starting February 2026.

• During your internship, you work on application research questions related to sun protection products.
• You prepare cosmetic formulations and conduct UV transmission measurements to determine the absorption of UV filters or the sun protection factor of the formulations.
• Additionally, you perform stability tests on the formulations, such as viscosity and pH measurements.
• Finally, you investigate the crystallization of UV filters in formulations using microscopy, summarize your results, interpret them, and present your findings.

What You Offer

• enrolled student in cosmetic sciences or a comparable degree program
• basic knowledge of cosmetic formulations
• good communication skills in German
• strong team player
• committed, independent, structured, and proactive working style

What We Offer

• You are part of the BASF team from day one.
• We pay an attractive internship allowance of €800 (monthly gross salary for voluntary internships and mandatory internships; thesis projects are remunerated with €1,000).
• You have the opportunity to live in a BASF-subsidized shared apartment for interns near the plant. If you need to relocate and use the shared apartment, we support you with a rent subsidy of €300 (monthly, gross).
• With us, you enter challenging fields of work and take on exciting tasks and, if possible, sub-projects in an interdisciplinary work environment.
• In addition, BASF sites offer various opportunities such as tours or workshops to get to know BASF better.
• This gives you a wide range of insights and experience at the world's largest chemical company. Information on internships can be found here

How To Reach Us

• Corinna Granterath (Talent Acquisition), [email protected], Tel.:+49 30 2005-59302 will be happy to answer your questions for this position. You are also welcome to book an appointment online (technical questions cannot be answered in this appointment)
• You can also reach our recruiting team here
• First information about our application process can be found here

About Us

At its site in Grenzach, BASF's competence center for UV filters, BASF Grenzach GmbH performs global development, technical service and production of innovative UV filters. Our products are used in sun screens, cosmetics and personal care products. The site is also home to the global development and technical service of antimicrobial active ingredients.

The company's unique location in the border triangle of Germany, France and Switzerland, with the Black Forest and the Alps nearby, offers attractive and varied leisure activities in addition to interesting professional opportunities.

You can find out more about BASF Grenzach GmbH at: www.basf-grenzach.de

Diversity is our greatest strength!

Become a part of our winning formula for success and develop the future with us - in a global team that embraces inclusion and equal opportunities irrespective of gender, age, origin, sexual orientation, disability or belief.