Hydrate + Detangle
Custom Leave-In Conditioner
A hydrating leave-in conditioner that detangles, tames unwanted frizz, and leaves strands soft, polished, and manageable. Personalized to your unique goals, Prose Custom Leave-In Conditioner primes your hair for styling and protects hair from heat damage up to 450°F.*
Alcohol-free | Smooths flyaways
Pump or spray applicator, based on your needs
*Instrumental test of Prose Leave in Conditioner vs. non-treated hair
5.1 fl oz
Love your first order (or it’s on us)

A personalized leave-in conditioner,
made to order just for you
Every leave-in conditioner we formulate is personalized to 80+ factors from your in-depth consultation. Analyzing everything from your hair type to your zip code, we’ll create a formula tailored to your one-of-a-kind needs. Below are just a few examples from the millions of possibilities.
Get your formula
Leave-In Conditioner tip #471
For an extra dose of hydration, use Prose custom leave-in conditioner alongside custom hair oil. Apply your leave-in on damp or dry hair, then finish with hair oil to lock in moisture without any greasy residue.

A leave-in conditioner with naturally powerful + proven-effective ingredients
Every ingredient in your Custom Leave-In Conditioner is rigorously researched, backed by science, and precisely selected to target your unique hair goals and concerns. We responsibly source only the clean ingredients you need — nothing more, nothing less.
Cruelty-free
PETA Approved
Alcohol-free
Sulfate-free
Paraben-free
Mineral oil-free
Phthalate-free
GMO-free
Available fragrance-free
Silicone-free options
Vegan options
Personalization Works Better™
Take our consultation
We’ll analyze 80+ factors—from what you eat to where you live—to understand the unique needs of your hair.
Your formulas are made to order
Our AI-powered algorithm personalizes your products + routine, carefully selecting from 185+ clean ingredients to meet your goals.
as you change, so does your prose
We’ll address any new concerns, adjust your formulas with the seasons, and learn from your feedback for an always-custom fit.
Frequently asked questions
What hair types does Prose custom leave-in conditioner work for?
Prose leave-in conditioner is custom-formulated for every individual, and isn't limited to one hair type. It delivers the right amount of hydration for your needs, and contains a unique blend of active ingredients to meet your hair goals.
How do I use Prose custom leave-in conditioner? Can I use it as a heat protectant?
Custom leave-in conditioner can be applied on damp hair as a hydrating mist and styling primer. It can also be used on damp, towel-dried hair as a detangler before or after washing. More instructions and a fully detailed routine will come with your unique formula. Custom Leave-in can also be used as a heat protectant before heat styling—it’s lab-proven to protect strands up to 450°F. In the consultation, we’ll ask about your styling routine; be sure to select whichever heat tools you use, and your custom formula will be thermoprotective.
Will Prose custom leave-in conditioner leave any residue or stains?
Our non-greasy formula keeps strands hydrated and soft without feeling weighed down. And since it's meant to be left in until your next wash, you can rest easy—it leaves no trace on your pillowcase or sheets.
Is Prose custom leave-in conditioner color-safe?
Yes—all Prose products are color-safe, and if you indicate color treatments during the consultation, your custom leave-in may contain additional ingredients for color protection.
Can custom leave-in conditioner meet my Prose ingredient preferences?
There's no need to worry—all leave-in conditioner formulas are vegan. Additionally, you can opt for a silicone-free and/or fragrance-free formula during the consultation.
What ingredients are NOT used in Prose custom leave-in conditioner?
Prose custom leave-in conditioner is free from the following: alcohol, phthalates, GMOs, sulfates, parabens, phthalates, and mineral oil. Like all Prose products, leave-in conditioner is cruelty-free.
Can Prose Custom Leave-in Conditioner treat medical conditions like hair loss or dandruff?
Prose is not intended to treat medical conditions. Our formulas are a 100% drug-free alternative to prescription products and OTC (over-the-counter) medicines. Instead, we use only the highest quality, naturally powerful and proven-effective ingredients to enhance shine, volume, hair health, and so much more.