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New :  *Scan for Toxic Chemicals* App!


New app lets you quickly scan cosmetics to see if they’re potentially toxic


We’re trying not to freak out, but THIS MIGHT BE THE BEST APP EVER.


The free app will tell you if shampoo or makeup contains potentially toxic chemicals (“BHA / BHT, PEGs, petrochemicals, parabens, phthalates, formaldehyde releasing agents, siloxanes, sulfates, fragrance/parfum and non-biodegradable ingredients”). 


Reports Ecouterre:

Users can scan a product in question, and immediately learn if it is “clean” or “dirty.” If deemed dirty, the app will offer similar and safe alternatives to buy instead. The app can also be used to raid your own bathroom closet and get rid of old products that could be unsafe.

There’s even a handy iPhone case reminding you what to watch out for in shampoo.


Grab the free app here!




Demystify Cosmetics Labels With “Think Dirty” Smartphone App, Ecouterre

Also: Think Dirty App Scans Your Personal Care Products Looking for Toxins



Think Dirty: App Review


My world has been busy these days, but I’m back to talk beauty because even though I’ve been doing a billion other things, I’m thinking around the clock about everything I want to share with you!

Just yesterday, a friend told me about ‘Think Dirty,’ an app that tells you how toxic your personal care and beauty products are by carcinogenicity, developmental and reproductive toxicity and allergies and immunotoxicities. You can scan your product barcode (great when you’re shopping, but potentially terrifying when the product is already in your medicine cabinet), or searching their database of 81K + products. I’m not necessarily the most committed to using all-natural and organic products, but I’m definitely open to experimenting with natural alternatives. I’m currently loving coconut oil and tea tree oil and use them regularly in my regimen, combined with my other chemical-ridden products. And while I was already expecting many of those to be pretty toxic, it was still pretty alarming to see many of them scanned in as 9s and 10s, 10 being the most toxic. And even more alarming, still, was seeing their carcinogenic toxicity - scary stuff!

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My scans included my Lady Speed Stick (yikes!) and Revlon’s Just Bitten Kissable Balm Stain (a current favorite — all their new balms are so moisturizing!), which came in at a 6. This was probably one of my less toxic products - go Revlon!

Read More


We’re using an increasing number of cosmetic products on a daily basis, but as the beauty industry isn’t required to list ALL of the ingredients on their product labels, it begs the question; do we really know what we’re putting on to our skin? The Think Dirty app is designed to help consumers to make more informed choices about the products they use. Users can either search for a product using the app’s extensive database or scan the product’s bar code to see a full list of the ingredients it contains. Ingredients are given a “Think Dirty” rating fro 0-10, based on their potential toxicity.

We just realized we are famous in the UK!

Launch Festival Recap, #femalefoundersconference, DX3 Canada, Expo West and many more!

February and March have been busy months for us. We were travelling all over San Francisco, Anaheim, CA, and back in Toronto!

Launch Festival

Feb 24 - 26 we were in San Francisco demoing our app at Launch Festival thanks to the generous Demo Pit scholarship. We met lots of great people. Our swags proved to be quite popular and attracted an unusual amount of male attendees’ attention. 


On March 1, I was fortunate to have the opportunity to attend an invite-only first time ever conference hosted by Y-Combinator for female founders only. The experience was phenomenal. In total 5 Y-Combinator alumnus were speaking. You can see the most amazing recap here and here. It’s likely the first time I felt most at ease, with no need to explain why Think Dirty is needed. Almost every single attendee I spoke to can relate to why our app is something missing in the misinformed consumer space. In addition, being in a room full of aspiring women all aiming to achieve something bigger than themselves was an honourable and humbling experience, thank you for the opportunity, Jessica Livingston!

DX3 Canada

After Launch Fest, we were busy at DX3 Canada's CFC IdeaBOOST booth. I sat down with Amber Mac from App Central for Tech Spotlight, who generously mentioned us in November 2013. 

Expo West 

This year’s show has once again surpassed the number of audience from last year to 34,000 attendees, met with some great brands and pioneers in the natural product space. See some recaps below:

Last but not least, we were mentioned by Lululemon on their company blog.

We are flattered and excited that the yogis will learn more about us. For all Toronto peeps, in March we will be at Girls in Tech Toronto March 25.

And then will be demoing at Tech in Motion in April. If you are in Toronto, be sure to check us out in warmer spring night.

Last but not least, we have a very honourable mention from Jason Calacansis, Founder of and Launch Festival on his twitter and his new inside app news!

Till next time,


P.S. Spring is here (sort of). Spring clean while thinking dirty!

See you at Launch Festival Demo Pit!


We are happy to announce that we won the Demo Pit Scholarship at Launch Festival! So we are going to San Francisco on Feb 24 - 26, come see us at the event!

If you are from the area and love to connect with us during Feb 24 - March 2, say hello at



App Update for iOS 7 + What are We Up to Lately?

I am happy to announce that after 2 months of hard work, we have updated our app to include these exciting features in the latest v1.1 update!

  • Notifications: We got overwhelmingly positive response for user submissions. With this new feature, any product submitted or liked by you, we will send you a notification to see it’s rating once it’s inputed in database. We also will let you know if the rating of a product is changed due to regulations or change of formulations, if that product is liked or saved by you. We work diligently to input your submissions, and we want you to be the first to know! 
  • Badges: We want to reward you for your hard work for learning ingredients. Since we launched in August, you have earned your bragging rights, you will now see them in badges. The most you earn, the more you collect! Show them off, and share and tag us, we would love to hear from you.
  • Improved searched and iOS 7 compatible: We improved overall searches accuracy and the performance for iOS 7. If you notice anything not right, please send us feedbacks at
  • Methodology explained in details: There were lots of questions regarding how we rate products. So we expanded and dived deep in the full scope of how we rate products. Tap the rating box or Settings > Our Rating System to learn the Think Dirty difference.


We also got quite a few mentions in the press:

Check out others including, Huffington Post, Grist, Ecouterre, App Central, BetaKits and many others at buzz section of our site.

We had a blast visiting Austin and San Francisco. Here are some of the highlights from the shows:

As always, love to hear your feedbacks, write us at


P.S. Think Dirty blog turned 1 today! Happy Birthday to us.

Think Dirty Rating on Carrageenan


In app store we have a user’s response asking how come we rated it a 7 Half n Half vs. EWG rated as 2 Low Concern. And here are the reasons:

  • It’s listed in EU CosIng if mixed with TEA, it’s listed as restricted.
  • If it’s being taken as food, according to Dr. Weil’s article, Dr. Tobacman published 18 peer-reviewed studies and convinced it’s harmful to human, read the her testimonial here.
  • Degraded Carrageenan is an issue both as safety and sustainability to coral reef per this Now Toronto article.
  • IARC listed Carrageenan as Category 2B Cacinogens

We just figured our users won’t want something that’s carcinogenic and not sustainable on their bodies, so we rated it 7 Half n’ Half, to avoid if possible. We are citizen scientists and just go by common sense approach.

In addition, there are currently 119 products contain this substance in our product database. They range from face cream to toothpaste, which is edible and you won’t want to get more of this stuff in your stomach.

We hope that clears up the confusions. If you are the reviewer and have further questions, please feel free to reach out at

Our most shared posted on Facebook Fan page!

Most of our fans agree that we always got tricked into buying “natural” and “organic” products. We are glad Campaign for Safe Cosmetics helped us spread the word!

Love from Dr. Bronner’s Soaps

If you are a die-hard organic product fan, you can attest our excitement when the pioneer and champion on anti-GMO and true organic labelling, Dr. Bronner’s Soaps, retweeted us! It’s more than an honour. Think Dirty team literally too excited to sleep tonight.