Clean Beauty, Biotech & The Future of Skincare ft. Krupa Koestline

The beauty industry has never met a buzzword it did not want to put on a label.

But ingredient name-dropping without real formulation logic is just…name-dropping.

In this episode of Esthetician Unlocked, Elaine Sterling sits down with Krupa Koestline, award-winning cosmetic chemist and founder of KKT Innovation Labs, for a conversation about what happens when skincare science, brand strategy, and honest ingredient education finally meet.

What You'll Learn:

How Krupa moved from biotech into cosmetic chemistry
Why her Estée Lauder internship changed the direction of her career
Why custom formulation beats off-the-shelf private label
Why new beauty brands need to define their niche early
What clean beauty actually means when you remove the fearmongering
Why long-term environmental impact matters in ingredient choices
Why inflammation affects melanated skin differently
When exosomes actually make sense in professional skincare
Why salmon sperm and snail mucin need more honest conversations
Why PRP and microneedling still make scientific sense
Why most great skincare results are built at home

The big theme: skincare science is not about chasing the loudest trend. It is about knowing what works, when it works, who it works for, and when the marketing needs to calm down.

About Krupa:

Krupa Koestline is an award-winning cosmetic chemist and founder of KKT Innovation Labs, known for her work in clean beauty formulation, biotech-driven skincare innovation and custom product development. With a background in biotech and chemistry, Krupa built her career at the intersection of science and beauty. Her work focuses on helping founders develop bespoke formulations that connect brand vision with biological reality, rather than relying on off-the-shelf private label products.

Krupa has been recognized with the Florence Wall Cosmetic Chemist Award and named one of Beauty Independent’s top product developers. Through KKT Innovation Labs, she has helped shape products rooted in ingredient transparency, skin science, sustainability, and thoughtful formulation.

Episode Resources:

Krupa Koestline on LinkedIn
Capsum kkt Website
Elaine Sterling on LinkedIn
Elaine Sterling Institute on LinkedIn

Episode Highlights:

09:53 Custom Formulation > Copy-Paste Skincare

Krupa built KKT Innovation Labs around bespoke formulation, not private label. She saw that founders did not need another off-the-shelf product with a different label slapped on it. They needed formulas built around their exact customer, brand vision, skin concern and ingredient philosophy. For Krupa, this blend is how products stop sounding different and start being different.

12:05 Your Product Cannot Be Everything to Everyone

Krupa gives beauty founders the advice many do not want to hear: define your niche early. In a market drowning in exosomes, peptides, biotech buzzwords, and “does-it-all” promises, focus is a competitive advantage. Niche products are doing better because they solve one problem clearly for one person who actually needs it. The brands that try to do everything often end up saying nothing.

16:09 Clean Beauty Without the Panic Button

Krupa does not define clean beauty through fear. For her, it is about being mindful of what goes into a product, how it affects the body short term and long term, and what consequences it may have for the environment. That includes things like biodegradability, aquatic toxicity, soil impact, and ingredients that may be restricted in one region but still allowed elsewhere. Clean beauty, in her view, is not about scaring people. It is about giving them better options.

35:44 Exosomes Are Not Magic Fairy Dust

Krupa explains exosomes in a way that actually makes sense: they are like tiny postcards carrying messages between cells. They can contain proteins, mRNA, peptides, amino acids and signals that help tell cells what to do next. That is why they can be powerful for wound healing. But the important part is context. The postcard has to get where it needs to go. Otherwise, it is just sitting on the porch.

42:00 The 80/20 Rule of Real Skincare Results

Elaine brings up the idea that 80% of results come from what happens at home, and Krupa’s science-driven perspective supports the bigger point. Professional treatments matter, especially microneedling, PRP, peels and post-procedure recovery, but the day-to-day routine is where the skin is constantly being supported or sabotaged. Great skin has to be maintained.