FAQs

What is Stirbar Lab?

Stirbar Lab is a hands-on cosmetic formulation lab where you can create personalized skincare, haircare, and color cosmetics from extracted, natural organic ingredients.

How does the hands-on experience work?

You’ll enter our lab, select your raw ingredients such as nuts, plants, beans, and more. Then, you’ll extract oils, scents, and waxes from these ingredients and combine them to create your custom product, all with expert guidance from our chemists.

What ingredients do you use?

We use organic grown, locally sourced raw ingredients. Our formulations are free from solvents, phthalates, sulfates, petroleum, PEG, silicones, EDTA, and BPA.

Do you extract all ingredients from scratch, or are some store-bought?

We extract 90% of ingredients from raw botanicals in-house. However, for certain specialized ingredients that require advanced processing, we source high-quality, ethically produced components to ensure safety and consistency.

Can I take my custom-made product home?

Absolutely! Your personalized product is packaged onsite with a customized label featuring your name.

Do I need a science background to participate?

Not at all! Our sessions are designed for everyone—whether you’re a beauty enthusiast, DIY lover, or just curious about cosmetic science.

How long does a session last?

Sessions typically last 2 hours, depending on the complexity of your formulation.

Are your ingredients reviewed for safety and compliance?

Stirbar Lab is an FDA-registered cosmetic facility under MoCRA. All ingredients are selected through SDS and supplier data. Active ingredients are backed by clinically supported data.

What is Stirbar Lab’s return policy?

You may return eligible products within 30 days of delivery with free return shipping. Customized or made-to-order items and gift cards are non-returnable. To start a return, email info@stirbarlab.com with your order details.

Booking & Visit Information

How do I book a lab session?

You can book directly on our website by going to shop tab: www.stirbarlab.com.

Where is Stirbar Lab located?

Our lab is located in Valley Research Park (VRP) at 319N Bernardo Ave, Mountain View, California, USA.

Can I bring a friend?

Yes! We can accommodate up to 6 people in the lab at the same time. Each person must book separately, as every workshop is an individual experience.

Do you offer group sessions or private events?

Yes! We host private events, group workshops, and team-building experiences. Contact us for details.

How can I stay updated on new offerings

Preparation & Safety

What if I have allergies or sensitive skin?

If you have known allergies or sensitivities, please inform us before your session. While we use natural, high-quality ingredients, some botanical extracts and oils may still cause reactions in sensitive individuals.

Important: Our lab contains nuts and fresh plants, which may pose a risk to those with severe allergies. If you have concerns, please reach out before booking.

What should I wear to the lab?

Since you’ll be working hands-on with cosmetic ingredients, we recommend wearing comfortable clothing and closed-toe shoes for safety. We’ll provide lab coats, gloves, and safety goggles as needed.

Is there a liability form to sign before my session?

All participants agree to the liability waiver at the time of purchase by clicking to accept the terms and conditions. This waiver outlines potential risks and safety guidelines associated with working with natural ingredients. By completing your booking, you acknowledge these risks and agree to follow all safety instructions. If you have any concerns, please contact us beforehand.