Words by- Josephine Agbonkhese

A British-Nigerian Cosmetic Scientist with over 16 years of diverse experiences in the beauty industry, Hilary Rodriguez-Taiwo is a pure embodiment of beauty and brain.

Currently serving on the Standards Organisation of Nigeria’s Technical Committee on Beauty & Wellbeing Services where she contributes her quota to national guidelines that ensure safety, efficacy, and professionalism within the beauty industry, she has on her sleeves years of experience working with Procter & Gamble UK, where she formulated beauty products for top brands like Maxfactor, CoverGirl, and D&G Cosmetics in the UK. Hitherto, she worked at various beauty counters including YSL Beauty, Lancôme, Chanel, and Clinique.

The Executive Director of Hilary Says, an almost 10-year-old science-led skincare retail platform that helps people make smarter skincare choices, Rodriguez-Taiwo who holds a degree in Cosmetic Science from the University of the Arts, London College of Fashion, shares valuable insights on beauty product formulation with Allure in this interview. She also discusses her journey into the field, touching on her childhood and style.

What inspired you to pursue a career in cosmetic science?

I’ve always been fascinated by the intersection of science and beauty. My mum had a deep love for skincare, makeup, and perfumes, and that passion rubbed off on me from an early age. I found myself drawn to the idea that beauty wasn’t just about appearances—it could be driven by science, data, and real results. I wanted to understand what made products truly effective, not just what was promised on the label. That curiosity evolved into a full-blown passion for cosmetic science.

So, how did your journey into this field begin, and how has it progressed through the years?

I started out as a makeup artist and worked at various beauty counters including YSL Beauty, Lancôme, Chanel, and Clinique. Those early experiences gave me a hands-on understanding of consumer concerns and preferences. I went on to earn a degree in Cosmetic Science, which led to my work in Research & Development at Procter & Gamble in the UK. Over the years, I transitioned from the lab to consulting, product development, and entrepreneurship.

…and currently?

I currently run Hilary Says, a science-led skincare retail platform that helps people make smarter skincare choices. Beyond selling products, we educate, consult, and curate personalised routines based on research and clinical results. I’m also the MD/CEO of Aurevion, our parent company, which has now ventured into the distribution of science/research backed skincare brands in Nigeria and is working to expand across Africa. Additionally, I serve on the Standards Organisation of Nigeria’s Technical Committee on Beauty & Wellbeing Services, contributing to national guidelines that ensure safety, efficacy, and professionalism within the beauty industry.

Your career at Procter & Gamble has seen you formulate for Maxfactor, CoverGirl, and D&G Cosmetics. Can you describe the experience?

My time at Procter & Gamble was transformative. It taught me the value of precision, innovation, and accountability. I worked with global teams to develop colour cosmetics for diverse markets—each with unique regulatory requirements and consumer preferences. It was a high-pressure, data-driven environment, but also incredibly rewarding. It laid the foundation for how I approach product formulation and problem-solving to this day.

How do you approach the selection of ingredients for a new cosmetic formulation and ensure it’s not imitating another?

Every formulation starts with a clear problem to solve. From there, I select actives backed by robust clinical data, then build a formula that balances efficacy, safety, and texture. I also look for unique delivery systems and ingredient synergies that enhance performance. Innovation doesn’t always mean inventing something brand new—it’s often about doing something smarter, better, or more targeted than what already exists.

How do you balance product performance with consumer safety and environmental concerns?

It’s never one or the other—they must go hand-in-hand. I choose ingredients with a strong safety profile and formulate within approved regulatory limits. I also consider environmental impact—how ingredients are sourced and whether they disrupt ecosystems. The goal is to create high-performing products that are also ethically and responsibly made.

Can you explain the role of preservatives in cosmetics and how you select appropriate ones?

Preservatives are essential in water-based products—they prevent bacteria, mold, and yeast from growing and keep products safe throughout their shelf life. I use broad-spectrum preservatives that work at low concentrations and have low allergenic potential. The product’s pH, container type, and how it will be used all factor into which system I choose.

Tell us your experience with natural or organic formulations…

There’s a lot of confusion around “natural” and “organic.” Natural simply means plant- or mineral-derived; organic refers to how the ingredient was grown (without synthetic fertilizers or pesticides). But natural doesn’t always mean safer or more effective. Some natural ingredients require refinement to remove irritants or contaminants. I prioritise biocompatibility—how well an ingredient works with the skin—whether it’s natural or lab-made.

Your trajectory shows you’ve been an advocate for healthy beauty practices. Why should this be a concern for everyone?

Because beauty isn’t just about appearance—it affects your health, confidence, and wellbeing. The skin is our largest organ. Unsafe practices, misinformation, or unregulated treatments can do real harm. I believe in informed beauty—where consumers understand what they’re using, why it works, and whether it’s right for them. It empowers people to care for themselves better and more consciously.

When you consult for brands, do you see them embrace safe alternatives regardless of cost?

Yes—at least the ones I choose to work with. I’m very clear about my values. I educate brands about dose, safety limits, and the importance of context in formulation. It’s not about fear-mongering but about evidence-based decisions. Even water can be toxic at the wrong dose—everything has to be used responsibly. The best brands are those that balance cost, performance, and long-term trust.

What’s the most challenging part of developing new formulations?

Balancing stability, performance, and sensory experience. You can have the best actives, but if the product doesn’t stay stable or feel great on the skin, people won’t use it consistently. Getting those elements to work together is both science and art. You have to think like a chemist and like a consumer.

Can you discuss a time when you had to reformulate a product due to concerns?

Yes—there was a time when an ingredient I was using became the subject of regulatory concern in the EU due to its environmental impact. I had to completely reformulate multiple products where it was a key component. It was difficult, but necessary.

Plastic surgery and other permanent cosmetic solutions are on the rise. What are your fears about this?

I worry about the normalisation of extreme or unnecessary procedures, especially among younger people who are heavily influenced by social media filters, unrealistic beauty standards, and comparison culture. The pressure to look a certain way has never been higher, and for many, it’s less about personal empowerment and more about trying to conform to an ever-changing ideal. While I fully support body autonomy and believe everyone has the right to make choices that make them feel confident, I think those decisions should be rooted in self-awareness and long-term thinking—not viral trends. Cosmetic enhancements can be powerful tools when used intentionally and responsibly, but they shouldn’t be seen as quick fixes for deeper issues of self-worth. We need to reframe the conversation around beauty—not just what looks good in the moment, but what’s healthy, sustainable, and authentic in the long run.

How safe are these procedures long-term, and is it worth the risk?

When performed by qualified professionals, many cosmetic procedures can be safe and deliver excellent results. But no procedure is without risk—whether physical, emotional, or psychological. A major concern is that people often underestimate the long-term impact or make impulsive decisions driven by pressure or trends. These are deeply personal choices that should be made with clarity, not comparison. It’s crucial to consult experienced practitioners who offer honest, balanced guidance. Ultimately, whether it’s worth the risk depends on your goals, mindset, and readiness. The best outcomes come from timing, self-awareness, and doing it for the right reasons—not to chase perfection.

Let us delve into your childhood; what was growing up like and where did you grow up?

I grew up in Lagos until I was 13, then moved to the UK. My childhood was full of love, warmth, and family. My dad passed away when I was 12, which changed the dynamics of my world, but the years I had with him were some of the best. Our house was always buzzing with joy, music and laughter.

What was your dream as a child?

I wanted to be a neurosurgeon. I’ve always been captivated by how the human body works, especially the brain. While I didn’t go into medicine, my fascination with science and problem-solving stayed with me, and I found my calling in cosmetic science.

Looking back, who would you say has influenced your life the most?

Definitely my mum. Her resilience, warmth, and grace shaped my outlook on life. She taught me how to lead with love while staying strong. Hearing her talk about me with so much pride makes everything I do even more meaningful.

Describe yourself in a single sentence…

I’m a fiercely loyal and purpose-driven woman who lives life fully, loves deeply, and leads with empathy, care, and integrity.

What’s your guiding philosophy?

Live intentionally. Don’t just exist—make it count. Show up fully, and leave things better than you found them.

Your top three beauty hacks?

Retinol—start early, and stay consistent. Good skin starts from within—eat well, hydrate, and manage stress. Never skip sunscreen—it’s the best anti-aging product you can own.

Whose style would you love to steal and why?

Zendaya—because she’s fearless. She can go from classic to edgy in seconds and still look effortless. Her style is bold and always authentic.

What do you look forward to?

I’m excited about building a legacy that helps reshape Africa’s beauty industry—one rooted in science, transparency, and results. On a personal note, I look forward to more travel, more laughter, more memories with the people I love—and simply living a life that’s joyful, intentional, and deeply fulfiing.