Environmental Working Group

Rigorous research on household toxins.

European Union Regulations (REACH & food contact safety standards)

Some of the strictest chemical safety laws in the world.

California Prop 65 & other state-level regulations

Flagging chemicals known to cause cancer, reproductive harm, or birth defects.

Think Dirty & Yuka

Ingredient transparency platforms that score consumer products.

A Note From Tess

I didn’t start Clean Slate as a scientist in a lab (see my disclaimer below). I started it as a home cook who cares deeply about health. For years, I went down rabbit holes trying to find the best products for my kitchen, thinking I was making safe choices. But the deeper I researched, the more I realized I had been doing it all wrong.

My professional background is in sustainability, where I saw firsthand how materials, regulations and corporate decisions impact health and the environment.

Clean Slate is the resource I wish I had when I was trying to sort through conflicting advice and hidden risks. Now, instead of endless rabbit holes, Clean Slate delivers the science in plain language so you can make safer choices without the overwhelm. As someone who feels most alive outdoors in the mountains, surrounded by fresh air and snowpack, I wanted my kitchen to reflect that same sense of clarity and simplicity. Clean Slate is my way of bridging those two worlds: science, nature and everyday living.

The information provided by Clean Slate is for general informational and educational purposes only. It is not intended as, and should not be taken as, medical, legal, or professional advice. Always seek the advice of qualified professionals regarding any health or safety concerns. Clean Slate makes product recommendations based on publicly available research and third-party sources; however, we do not manufacture, sell, or guarantee any products mentioned. We assume no responsibility or liability for the safety, effectiveness, or future findings related to any recommended products. Any reliance you place on such information is strictly at your own risk. By using our services, you acknowledge that Clean Slate is not liable for any loss, injury, or damages arising from the use or misuse of the information or products referenced.