Introducing Arithmetic: How Our Founder Got His Adult Acne Under Control

Posted on May 24, 2013 by Andy Bosselman

Hi, I'm Andy Bosselman, the founder of Arithmetic. In 2009, when I took a job with the world's largest cosmetics retailer, I had given up on treating my acne

Over nearly a decade, I had seen more than a dozen dermatologists and other skin specialists. They had given me antibiotics, steroids, and prescriptions like Differin, Retin-A, and Accutane. I had tried a range of drugstore products too. Nothing worked. 

I figured giving up was better than continuously trying new things that didn't work and hurt my sensitive skin. 

What I Learned that Renewed My Hope

When I arrived at "Beauty Central," I thought my new job was kind of funny. There I was a guy working at a cosmetics company. 

As hundreds of cosmetic products crossed my desk, I took an interest in skincare, especially the ingredients. I was skeptical about many of them so I took a serious look at the science behind them. 

When I read academic research and clinical studies, I realized that nearly all acne products are designed to act fast on teen skin. Yet a growing body of research showed that adult acne is different. 

The evidence is clear: Maximum-strength, chemical-laden products are problematic for the longer-term acne adults have.

I knew that scientists had helped many adults control their acne. Yet I could pick from hundreds of high-end products and none of them were ideal for adult acne. 

I wanted to try the things that worked in scientific studies. So I started mixing my own products at home. My evidence-based approach included a smarter mix of ingredients and lower doses of ingredients that can cause dryness and irritation. 

After a few months of trial and error, I had created a skincare routine guided by research. 

The science was right. My products worked. 

Finally, My Acne Was Under Control 

However rewarding the result, mixing my own products was a pain. 

It wasn't long before I met a pair of chemists who also happened to have sensitive, acne-prone skin. 

Together we created the Arithmetic Acne Control Complex.

Arithmetic Acne Control Complex is far superior to the stuff I mixed at home. Using it with a smart and disciplined skincare routine has helped keep my acne under control without pain or irritation.

My acne hasn't cleared completely—I still use the Acne Control Complex. But today most people don't notice my acne and they are surprised to hear how much I've struggled with it.

I know the Arithmetic approach can help you too.

What do you think? 

We're a brand new company and the Arithmetic Acne Control Complex is our first product. We hope there will be more. If you're interested in what we're doing, we would like to hear what you think. If you have any questions, feedback, or product ideas, e-mail me at andy [at]


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