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That's really great-- we are super happy you are enjoying your set. We also have a pretty easy way for reordering

They are! All our formulas are free of parabens, sulfates, phthalates, GMOs, and triclosan.

Great suggestions! We are waiting for the touched up images of our bottles to come back today so we can at least show the actual bottles on the homepage. And that's a fair point- we collected the name to help demonstrate how it looks on a bottle in the next screen and we also didn't want to lose people during the order process for some glitches we were having which is why we get an e-mail address. We'll probably be able to do without it soon though!

That's a great question-- the scalp and hair roots are arguably the most important aspects to consider when developing formulations. We don't currently take that into account but we should try to find an easy way to work with customers on that!

Thanks for the comments! See my responses below :)

1) Essential oils correlates to the "unscented" option-- we use a variety of essential oils in our bases and nothing artificial is added. Similarly, the "yellow" color option is actually uncolored. We should specify that!

2) We're trying to make a cool feature in the account page and a follow-on e-mail to mention some of the active ingredients at work in each formulation.

3) The oil level is a bit tougher to estimate but the easiest way is if you wash your hair with shampoo/conditioner in the evening, how does your scalp feel in the morning? If you dab it with a paper towel, would there be no oil (dry), a little oil (normal), or a lot of oil (oily). We are trying to make this process easier in hair lab: https://functionofbeauty.com/hair_lab/

4) Thanks!! We think so too.

Awesome, thanks! That's a great point-- We actually had separated out our site into Function of Beauty: For Him and For Her (with separate loops) but didn't include it in the latest revision. I'll combine that now :)

Hey guys, I'm the co-founder and CEO of Function of Beauty (a YC company in the current batch). We're trying to disrupt the beauty space beginning with personalized shampoo and conditioner formulations. We use an algorithmic approach to translate a customer's hair type and hair goals into ingredient combinations that work perfectly for them. Customers are able to design almost any aspect of their formulation, from its color to its fragrance. We also print their name on the bottle with a UV printer, which is really cool. Once they receive their set, customers can further tweak their formula until they have the perfect shampoo. To achieve all this, we individually fill each bottle of shampoo and conditioner (rather than produce large batches). While this process is currently done by hand (which takes forever), my co-founder Josh is developing a machine to automatically and precisely fill each bottle. Hien, my third co-founder, is an industry-leading formulation chemist (and an awesome one) who oversees every bottle that is made from the algorithm we developed together. You can check this all out on our site if you'd like! Before placing your order, we show you the precise ingredients that will go into your bottles based on your hair profile so you can see our algorithm in action.