What it is: A multitasking leave-in conditioner that detangles, hydrates, fights frizz, and protects hair from heat damage.Hair Texture: Straight, Wavy, Curly, and CoilyHair Type: Fine, Medium, and ThickHair Concerns:- Heat Protection- Frizz- DrynessKey Benefits: - Quickly detangles and fights frizz- Provides heat protection up to 450°F/232°C.- Hydrates, conditions, and softensHighlighted Ingredients:- Tamarind Seed Extract: Provides weightless hydration.- Panthenol and Vitamin E: Condition and detangle.- Hydrolyzed Proteins: Reinforce, smooth, and support weak areas of hair.Ingredient Callouts: Free of parabens, formaldehydes, formaldehyde-releasing agents, phthalates, retinyl palmitate, oxybenzone, coal tar, hydroquinone, sulfates SLS & SLES, triclocarban, and triclosan. It is also cruelty-free.What Else You Need to Know: This do-it-all detangler hydrates, fights frizz, and leaves hair smooth, shiny, and manageable. Use it on wet or dry hair and before heat styling for heat protection up to 450°F/232°C. When you’re on the go, this leave-in conditioner is great for taming flyaways and nourishing dry ends. This color-safe product is cruelty- free, paraben-, phthalate-, and SLS- and SLES-free. St. Barts transports you where every hour is happy hour. It’s beachy and tropical with notes of dragon fruit, orange blossom, tuberose, and musk.Fragrance Description: Smell like you’re out of office with a tropical scent featuring notes of dragon fruit, orange blossom, tuberose, and Baltic amber.Clinical Results: In studies:- Detangles, protects against heat damage, reduces breakage, and fights frizz—all in one stepBased on clinical lab testing vs. heat styling without protection. TRI/Princeton, 2026:- 2.7X less breakage—even at 450°FBased on clinical lab testing at 80% humidity vs. untreated hair. TRI/Princeton, 2026:- 72-hour frizz controlBased on instrumental wet combing force measurement vs. untreated hair. TRI/Princeton, 2026:- 12X easier to detangle
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6 fl oz/177 ml
International delivery
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Within 30 days of delivery
What it is: A multitasking leave-in conditioner that detangles, hydrates, fights frizz, and protects hair from heat damage.Hair Texture: Straight, Wavy, Curly, and CoilyHair Type: Fine, Medium, and ThickHair Concerns:- Heat Protection- Frizz- DrynessKey Benefits: - Quickly detangles and fights frizz- Provides heat protection up to 450°F/232°C.- Hydrates, conditions, and softensHighlighted Ingredients:- Tamarind Seed Extract: Provides weightless hydration.- Panthenol and Vitamin E: Condition and detangle.- Hydrolyzed Proteins: Reinforce, smooth, and support weak areas of hair.Ingredient Callouts: Free of parabens, formaldehydes, formaldehyde-releasing agents, phthalates, retinyl palmitate, oxybenzone, coal tar, hydroquinone, sulfates SLS & SLES, triclocarban, and triclosan. It is also cruelty-free.What Else You Need to Know: This do-it-all detangler hydrates, fights frizz, and leaves hair smooth, shiny, and manageable. Use it on wet or dry hair and before heat styling for heat protection up to 450°F/232°C. When you’re on the go, this leave-in conditioner is great for taming flyaways and nourishing dry ends. This color-safe product is cruelty- free, paraben-, phthalate-, and SLS- and SLES-free. St. Barts transports you where every hour is happy hour. It’s beachy and tropical with notes of dragon fruit, orange blossom, tuberose, and musk.Fragrance Description: Smell like you’re out of office with a tropical scent featuring notes of dragon fruit, orange blossom, tuberose, and Baltic amber.Clinical Results: In studies:- Detangles, protects against heat damage, reduces breakage, and fights frizz—all in one stepBased on clinical lab testing vs. heat styling without protection. TRI/Princeton, 2026:- 2.7X less breakage—even at 450°FBased on clinical lab testing at 80% humidity vs. untreated hair. TRI/Princeton, 2026:- 72-hour frizz controlBased on instrumental wet combing force measurement vs. untreated hair. TRI/Princeton, 2026:- 12X easier to detangle
I've been using this for a couple of months now, and had no problems as I've been letting my hair air dry after application. However, I've started blow drying my hair with this leave-in for the past two weeks, and there's something about blow drying with this product that's been triggering a sinus headache. I thought maybe it was a fluke or I was applying too much the first time, but I just finished blow drying for the second time and, right on cue, there's the sinus pressure halfway through. I still like this product, but I'll stick to air drying with it from now on.
9/16/2026
2.0
verified purchase
Below average
Smells great but it’s essentially a hair perfume. Did nothing to soften or hydrate my hair, if anything I noticed it actually sometimes made my hair feel sticky if I used too much? Not the worst product but FAR from the best.
9/4/2026
2.0
verified purchase
love the smell but too greasy for my hair
This is item did not work out for me. I love their detox shampoo. This leave in left my hair in greasy clumps. I wanted to like it since it smells so amazing. Better luck next time.
8/31/2026
5.0
verified purchase
I absolutely love the OUAI Leave In Conditioner! It makes my hair feel so soft, smooth, and manageable without weighing it down. It helps so much with detangling and frizz, and I love that it also gives me heat protection when I’m styling my hair. The scent is amazing and lasts without being overpowering. My hair looks healthier and feels so much softer every time I use it. Definitely one of those products I’ll keep repurchasing!
8/9/2026
5.0
verified purchase
I already love the leave in conditioner and this is a real upgrade. I’m so happy that they have it in the St. Barts! It’s my favorite scent of theirs and it sticks around but it’s not too strong or overpowering.
8/9/2026
3.0
verified purchase
I do really like the update to the spray nozzle - it’s finer and more even. That being said it’s not my absolute favorite leave in. I do think with applying less it doesn’t weigh down my hair as much but I don’t think it’s super effective with hydration for what my hair needs. Smells great though so I usually apply it on top of other things to give a nice scent!
8/9/2026
5.0
verified purchase
Ouai never misses! I was already a big fan of the original Leave-In, but St. Barts is my favorite Ouai scent so I was so happy to get my hands on the scented Leave-In! Amazing for vacation, summer, or anytime really!
8/8/2026
5.0
verified purchase
The best for frizzy hair
The St barts scent is my fave scent. My hair is very frizzy and I love how this leave in makes it nice and soft and also frizz free. I have been obsessed with it. It also doesn’t weigh my hair down and that’s a plus.
8/7/2026
2.0
verified purchase
Does not smell the Saint Bart's body mist and it smells weird in your hair. Back to my purology.
7/30/2026
5.0
verified purchase
A good one
I finally tried a new leave in and honestly, it smells amazing. It’s super lightweight, so it doesn’t make my hair greasy or flat, but it still detangles really well and cuts down frizz. I just spray it on damp hair after a shower and my hair feels soft, smooth, and way easier to brush.
