Customized hair care
I liked that it has quality ingredients (and comes with a printout about the ingredients). Didn't like the plastic disposable containers (rather than glass refillable to send back to Prose).
I really like the personalized angle of this shampoo and conditioner. I felt like I could really target specific problems with my hair while using this product. I used it mostly for treating my oily scalp and for extra shine. I feel like it lived up to most of its expectations, plus it smells amazing! But it is super pricey and didn't magically transform my hair, so it's hard for me to justify splurging on another set.
VERY customized formula. Formulates based off of UV Rays, Pollution, Water Hardness, Humidity, Wind. Has significantly helped with frizz and smoothness. Non-irritating on scalp. Good price. Option to choose unscented!
Subscription made it easy. I liked having a custom formula. The hair mask was a game-changer for me. The shampoo and conditioner are more expensive than my usual product and I'm not sure it's significantly better.