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Leave-In Hair Conditioner

(46 customer reviews)
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Restore your hair’s natural shine following exposure to the sun or salt water with our natural biodegradable Leave-in Hair Conditioner made with our potent antioxidant blend of Green Tea, Tulsi, Wakame and Olive Leaf.

  • Nourishing proteins replenish moisture
  • Light, non-greasy formula detangles hair, leaving it soft and manageable
  • UV absorbent to protect hair color from the sun while improving strength
  • Smells like Fig and Grapefruit… yum!
Tested and Proven Reef Safe, For Sensitive Skin, Antioxidant Blend, Sugarcane Packaging, USDA BioPreferred

Like many female divers, I have thick, curly hair that was always a tangled mess after diving.

As a diver AND a cosmetic chemist, formulating an effective, yet environmentally safe leave-in conditioner was a top priority when I started Stream2Sea. I needed to create a strengthening, non-greasy conditioner that doesn’t weigh down even thin, fine hair – but still holds up to a day of masks and hoods in saltwater.

– Autumn Blum, Founder and CEO, Stream2Sea

We Believe in Ingredient Transparency

Meet Our Organic Antioxidant Blend

Tulsi Leaf (Holy Basil)

Tulsi Leaf (Holy Basil)

Known as an adaptogen, it helps the body and skin adapt and overcome environmental stress. Tulsi helps counter the cellular oxidative damage caused by sun exposure.

Green Tea

Green Tea

Natural plant based extract used for its antioxidant and powerful skin-soothing properties. We consider green tea to be one of the most universally effective antioxidants.

Olive Leaf

Olive Leaf

Extremely rich in phenolic compounds exhibiting unique antioxidant properties that condition and provide nourishment to the skin and hair.

Wakame

Wakame

A species of seaweed considered to be a potent antioxidant ingredient for purifying and fortifying the body. Used for its high mineral, vitamin, and fiber content.

View All Ingredients
Aqueous Extracts of Camellia Sinensis (Green Tea) Leaf*, Ocimum Tenuiflorum (Tulsi) Leaf*, Alaria Esculenta (Wakame Seaweed)* and Olea Europa (Olive) Leaf*, Aloe Barbadensis (Aloe) Leaf Juice*, Cetearyl Alcohol, Behentrimonium Chloride, Glycerin, Dimethiconol Panthenol, Hydrogenated Vegetable Oil, Cocodimonium Hydrolyzed Keratin, Gluconolactone, Caprylic/Capric Triglycerides, Cinnamidopropyltrimonium Chloride, Undaria Pinnatifida (Wakame Seaweed) Bioferment, Lactobacillus/Olea Europaea (Olive) Leaf Ferment, Hydrolyzed Keratin Protein, Tocopherols, Panthenol, Fragrance (Naturally Derived), Sodium Benzoate * Certified Organic

Restore your hair’s natural shine following exposure to the sun or salt water with our biodegradable Leave-in Hair Conditioner made with our potent antioxidant blend of Green Tea, Tulsi, Wakame and Olive Leaf.

Salt, chlorine and the sun can all damage your hair. Our added antioxidants, B-vitamins and keratin all help to counteract that damage. To help protect your hair before swimming, rinse with fresh water if possible before applying the conditioner. Applying before your swim will give a protective coat to your hair follicles to prevent breakage.

Usage:

Rinse with fresh water if available, then apply to damp hair and finger comb to distribute evenly. Do not rinse. For maximum benefit, use after Stream2Sea Conditioning Shampoo and Body Wash.

Safe For You and Safe For Our Waters

What does tested & proven safe means for our bodies, waters and coral reefs?

Just because the front of the bottle might say it is reef safe does not mean that it is. That is because these terms are not yet regulated. You still need to look at the back, starting with the active ingredients listing. We have also discovered that just because a product is safe for people does not mean it’s safe in an aquatic ecosystem. Modern science has given us many lab tests to determine the safety of cosmetics, but there are currently few scientific lab tests to see if products are harmful to fish, coral and other aquatic life. We put Stream2Sea products through numerous studies to prove our safety, and believe that our products are the safest on the market for all your water, reef and outdoor activities.

46 reviews for Leave-In Hair Conditioner

  1. Lisa

    An excellent leave in conditioner, even for fine hair & during dry winter heating season .

  2. Alice

    I’m an avid scuba diver with curly hair that normally turns into a frizzy mess in the tropics. This leave in conditioner is awesome–the only thing that stops my hair from taking over the world on a dive trip (other than a hat and a ponytail).

  3. Sally Mohr

    Used the leave-in conditioner and conditioning shampoo on a recent boat trip. My hair stayed soft and tangle-free. Love it!

  4. Monozu (verified owner)

    Smells great, does it’s job of keeping my hair frizz-free!

  5. Bonnie

    I have thick coarse curly long hair and am blown away by how this product softens and tames my hair after 3 dives a day. Have used much more expensive ‘designer’ products and this beats them all. Am SO HAPPY it is healthy and safe for me and the environment. Will be using this at home and on dive trips from now on.

  6. Heidi Ernst

    I just learned about this conditioner at OWU in Chicago. I am delighted and so glad I purchased it. I have curly hair and I love the shine and definition of the curls after using it for the first time today.

  7. Jan

    Super nourishing! So rich that I, with fine and short hair, need only a pea-sized amount – but my friend with curly, dry hair uses more and my other friend that swims in a chlorinated pool needs a lot. Play with the amount until you find what’s right for your hair — everyone I know loves it and I’m sure you will, too!

  8. Heather

    I purchased this through Amazon as I was willing to try anything on my hair. The ocean and my hair are mortal enemies as my long, fine hair tangles when in salt water. This product worked so well I couldn’t believe it! Every time I got out of the ocean, my hair wasn’t tangled! I highly recommend this product and will continue to use it in the future.

  9. Christina

    LOVE love love this stuff!! I was given a sample at Tortuga music festival. I have really long straight hair and I use about a quarter sized amount. Smells great and leaves my hair soft and smooth!! I also love that since it’s a leave in conditioner, it cuts down on my shower time and water usage.

  10. Melissa (verified owner)

    My hair has never been softer after using the Leave-In Hair Conditioner. I love the smell, and a little goes a long way, even for us long-haired ladies!

  11. Viktoria

    The combination of reef friendly, great smell and wonderful hair make me come back to this leave in conditioner again and again.

  12. Faye

    Hero product! This leaves my hair really soft and manageable and keeps it free from tangles and the harsh effects of sun and salt water. A little goes a long way. Highly recommended.

  13. Autumn Blum

    Thanks so much, Faye!
    #ProtectWhatYouLove

  14. Laura (verified owner)

    This leave in conditioner is literally the BEST EVER! I have curly hair and salt water can be pretty tough on it, but this stuff keeps my hair lovely and soft. I use after diving/water activities while hair is still wet. And also as a leave in conditioner after my shower. I initially bought this just to use for diving, but it has quickly become my everyday conditioner!

  15. Carolyn (verified owner)

    This is the best conditioner I have ever used! I live on the boat 3 months during the summer and have very long thick curly mermaid hair. This product means I can swim every day, get a brush through the mane with no difficulty, let it air dry and go! I love this conditioner and carry samples on the boat to give out to other mermaids I come across!

  16. Melissa (verified owner)

    My hair is fine, but I have a lot and it does have natural wave. I used this for a week at Florida beach and it kept my hair from looking like a rats nest with frizz. I was able to put this in and let my hair go crazy naturally for a week. Loved it and would highly recommend.

  17. Melisa Karabeyoglu (verified owner)

    omg this is amazing!!!!:))) this is the only product that literally saves my hair ! it is sooooo elegant smelling( green tea and ylang ylang!!) It goes on so well and it doesn’t make my hair look oily at all. It also protects my hair from swimming. And also it is super cost effective because a little bit goes a long way! I am addicted and I am super picky with hair care!

  18. Bri (verified owner)

    Smells great and leaves my hair feeling light and soft. Awesome product!

  19. catherinefox

    My hair used to always get super tangled after a dive, but now I put it in before and I never have that issue anymore! My hair is so soft and manageable even with all the salt and wind!!

  20. meganmcl38 (verified owner)

    This is my favorite product!! It is the perfect remedy after salt water and long periods of sun exposure, it took out the tangles and made my hair not feel like straw and it smells SO GOOD! It was also the quickest package i’ve ever received from an online store and I ordered it during the holiday season! Very Impressed.

  21. Rachael (verified owner)

    This is a must buy! My hair has never been smoother or softer after a day in the ocean and wearing a mask. I’ve been hesitant to use products in the past because I’ve been worried about their impact on the reefs, so I’m so happy to have found something that is reef safe AND incredibly effective!

  22. Suthrncat (verified owner)

    I tried this last year on a live aboard, trying to be more reef-friendly. I’ve ordered again to use it at home and just ordered the bulk size. I have curly-frizzy hair and a lot of allergies, and this works great! I’ve actually been able to go from washing my hair every day, to every few days wi5 no build up and no itchies! It leaves my hair soft without weighing it down or making it greasy. Can’t go wrong on this!

  23. Liz (verified owner)

    I purchased this leave in conditioner on vacation and then went back to the website for more!Great for my curly hair and I love that it is great for the environment too

  24. Melissa (verified owner)

    I found this gem in Curacao a few years back and have been buying ever since! It’s literally the only thing that untangles my thin hair after diving (I put it on before and after!).. Silly be I’ve relating it to diving ever since and only recently thought..duh… why can’t I have soft hair all the time with no knots! Now it’s my go to leave in!

  25. Jill Biggerstaff (verified owner)

    This works so well with the Shampoo and Body Wash. My hair felt so light after using both products even though I’d spent most of the day in the sea.

  26. moochka7 (verified owner)

    Because you are protecting marine life, which is so important to me, as well, I had to try a product of yours. This leave-in conditioner is the best-smelling, smoothest hair product I have ever used. This will be my third and fourth bottles. Thank you!!!!! naomi

  27. Fanny (verified owner)

    This leave-in conditioner is amazingly light but rich and nourishing for my dry curly hair, and doesn’t even strip the goofy bright colors from Manic Panic or Arctic Fox I sometimes like to sport. Really happy with this leave-in conditioner for entertainment, sports activities and life uses.

  28. Undrthesea (verified owner)

    This is hands down THE best conditioner I’ve ever used. I have very long hair (down to my rear) and I’m a diver so you can imagine the beating my hair takes with the sun and salt. I’ve used and tried just about everything out there to keep my hair healthy and manageable and this leave-in is amazing! The best part is that it’s light weight, hydrating and makes my hair so soft. I’ve always had to use a regular rinse out conditioner in addition to a leave-in but not with Stream2Sea Leave-in. It’s wash, towel dry, leave-in condition and GO!

  29. Tabitha Loesch (verified owner)

    This stuff is literally the greatest thing ever. My hair was so soft after a day in ocean. No tangles at all! Plus I feel better knowing I’m not wearing anything that could hurt our oceans.

  30. Kim Langford (verified owner)

    I have long, thick, curly hair that tends to dry out easily and this conditioner works really well for me. I use it as a rinse out, and together with the S2S aloe gel, as a hydrating cream gel. Leaves me with soft, defined curls even in the humidity of a Florida summer. Love that I can go from work to swimming or diving without worrying about damaging the ecosystem 🙂

  31. John Cassese (verified owner)

    Great conditioner. I use it every day. Fantastic company

  32. Danielle

    Love ALL Stream2Sea products! But this conditioner is one of my favs! It smells great and leaves my hair feeling soft + I don’t feel guilty jumping in the ocean after I use it!

  33. Amber (verified owner)

    Being a FL girl I have been looking for environmentally friendly hair products forever. This was recommended to me by a fellow scuba diver, and I had my doubts. She has thick, curly hair and I have fine, thin hair. Well, I love it! It has become my everyday conditioner, combined with the shampoo/boby wash. Leaves my hair soft and gives it some body.

  34. BluberrySea

    Can I give this 6 Stars? I found it by accident at a dive shop in Florida a few years ago and haven’t used anything else since. Pre-dive, post dive, post pool session, and every day. Keeps my baby fine, curly hair tangle free, soft, and manageable. I use it every time my hair gets wet….

  35. Joy O’Connor (verified owner)

    Originally bought this just to take on scuba trips, but now I use it every day! I love the smell and it always leaves my hair feeling super soft. My hair used to be a matted mess after a full day of diving in the saltwater, but now I use this leave-in conditioner before and after and it works like magic! Super effective and ocean safe!

  36. Jo B (verified owner)

    This is my favorite after swim or diving product. I keep a tube in my dive bag and after diving, apply it to my shoulder length hair. I am able to pull a comb through my hair without pulling any strands out. I share this with my customers and give them some to try because I want everyone to know how great the product is. Because I share it so often, I buy it in the large size and refill my small tube to carry with me.

  37. kyra (verified owner)

    This is the best leave-in I have used. I have thick long curly hair. This product is smooth and does not leave nasty stiff build up on my hair but smooths the frizz and leaves my hair bouncy not stiff or coated. The most important feature is that I live off grid and care deeply about my watershed and can rest assured this product is made with the integrity of ingrediets that will not disrupt the health of my grey water systems and occasion creek I may jump into!!

  38. greg peter (verified owner)

    Bought this to help support MUCC – and love it. Smells great and leaves my covid-long hair soft and manageable.

  39. Heather Stone (verified owner)

    I have long, fine, highlighted hair, and it is A MESS in the ocean. This stuff is great. I run it through my hair before swimming and tie several hair ties in it. It comes out easy to comb through and NOT in a million knots, and I know it is not harming the ocean! I also use it as a detangler after showers. I really like this company.

  40. Heather (verified owner)

    I bought the huge bottle after buying the smaller tube. This stuff is amazing because it keeps my fine, long, highlighted hair from being a ball of knots in the ocean, and it’s not harming the ocean! I now use it daily as a detangler. It smells great – not too strong at all. I really like this company – protecting the ocean, no bad chemicals, and recycled plastics. What’s not to like???

  41. Sarah (verified owner)

    The perfect replacement for my hair styling cream that I normally use.

  42. Andrea Levy (verified owner)

    I like the feel and fragrance of this product, and knowing it is reef safe is HUGE! It does a great job of de-tangling and protecting my salt ridden hair on dive trips.

  43. Jeanne

    Left my long, fine hair free of tangles and smelling wonderful, even after using the shampoo and bodywash with saltwater! Works great and environmentally friendly, a win-win!

  44. Summer (verified owner)

    I was skeptical about a leave-in conditioner but this makes my hair feel great. I also love that it cuts down on my shower time.

  45. Courtney Julep (verified owner)

    This is my favorite Stream2Sea product. This leave-in conditioner has converted me to a leave-in believer. It saves a lot of water when you don’t need to wash it out, which is important to us all, but especially so when cruising on a sail boat and water is even more limited. It also completely detangles my long hair and leaves it super silky. A very happy surprise. You should not hesitate to try this along with the shampoo/bodywash combo.

  46. Zoe Dellaert (verified owner)

    Keeps my hair smooth after diving all day, better than anything else I’ve tried!

  47. Zoe Dellaert (verified owner)

    I love this reef safe conditioner! It keeps my hair smooth and prevents knots after diving all day. Love love love! Ordering again now.

  48. Your review is awaiting approval

    I have color treated hair and am very careful on what I use to protect it. I was unsure of using the leave-in conditioner but after one use, I was hooked! The smell is soft for even us sensitive ones. My hair never felt so soft and it kept the tangles nearly all out after my next dive. These are the only products in my scuba kit! At the end of my trip, my color still looked great! It didn’t strip it out.

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1 2 3
Zoe Dellaert
11/22/2021
Zoe
I love this reef safe conditioner! It keeps my hair smooth and prevents knots after diving all day. Love love love! Ordering again now.
Helpful?
0 0
Zoe Dellaert
11/22/2021
So great
Keeps my hair smooth after diving all day, better than anything else I've tried!
Helpful?
0 0
Courtney Julep
09/23/2021
This is my favorite Stream2Sea product. This leave-in conditioner has converted me to a leave-in believer. It saves a lot of water when you don't nee...More
This is my favorite Stream2Sea product. This leave-in conditioner has converted me to a leave-in believer. It saves a lot of water when you don't need to wash it out, which is important to us all, but especially so when cruising on a sail boat and water is even more limited. It also completely detangles my long hair and leaves it super silky. A very happy surprise. You should not hesitate to try this along with the shampoo/bodywash combo.
Helpful?
0 0
Summer
09/18/2021
I was skeptical about a leave-in conditioner but this makes my hair feel great. I also love that it cuts down on my shower time.
Helpful?
1 0
Jeanne
09/09/2021
Left my long, fine hair free of tangles and smelling wonderful, even after using the shampoo and bodywash with saltwater! Works great and environment...More
Left my long, fine hair free of tangles and smelling wonderful, even after using the shampoo and bodywash with saltwater! Works great and environmentally friendly, a win-win!
Helpful?
0 0
Andrea Levy
08/16/2021
I like the feel and fragrance of this product, and knowing it is reef safe is HUGE! It does a great job of de-tangling and protecting my salt ridden h...More
I like the feel and fragrance of this product, and knowing it is reef safe is HUGE! It does a great job of de-tangling and protecting my salt ridden hair on dive trips.
Helpful?
0 0
Sarah
08/16/2021
The perfect replacement for my hair styling cream that I normally use.
Helpful?
0 0
Heather
07/30/2021
I bought the huge bottle after buying the smaller tube. This stuff is amazing because it keeps my fine, long, highlighted hair from being a ball of kn...More
I bought the huge bottle after buying the smaller tube. This stuff is amazing because it keeps my fine, long, highlighted hair from being a ball of knots in the ocean, and it's not harming the ocean! I now use it daily as a detangler. It smells great - not too strong at all. I really like this company - protecting the ocean, no bad chemicals, and recycled plastics. What's not to like???
Helpful?
0 0
Heather Stone
07/30/2021
I have long, fine, highlighted hair, and it is A MESS in the ocean. This stuff is great. I run it through my hair before swimming and tie several hair...More
I have long, fine, highlighted hair, and it is A MESS in the ocean. This stuff is great. I run it through my hair before swimming and tie several hair ties in it. It comes out easy to comb through and NOT in a million knots, and I know it is not harming the ocean! I also use it as a detangler after showers. I really like this company.
Helpful?
0 0
greg peter
07/28/2021
Bought this to help support MUCC - and love it. Smells great and leaves my covid-long hair soft and manageable.
Helpful?
0 0
kyra
07/01/2021
This is the best leave-in I have used. I have thick long curly hair. This product is smooth and does not leave nasty stiff build up on my hair but s...More
This is the best leave-in I have used. I have thick long curly hair. This product is smooth and does not leave nasty stiff build up on my hair but smooths the frizz and leaves my hair bouncy not stiff or coated. The most important feature is that I live off grid and care deeply about my watershed and can rest assured this product is made with the integrity of ingrediets that will not disrupt the health of my grey water systems and occasion creek I may jump into!!
Helpful?
0 0
Jo B
06/17/2021
This is my favorite after swim or diving product. I keep a tube in my dive bag and after diving, apply it to my shoulder length hair. I am able to p...More
This is my favorite after swim or diving product. I keep a tube in my dive bag and after diving, apply it to my shoulder length hair. I am able to pull a comb through my hair without pulling any strands out. I share this with my customers and give them some to try because I want everyone to know how great the product is. Because I share it so often, I buy it in the large size and refill my small tube to carry with me.
Helpful?
0 0
Joy O’Connor
05/11/2021
Originally bought this just to take on scuba trips, but now I use it every day! I love the smell and it always leaves my hair feeling super soft. My h...More
Originally bought this just to take on scuba trips, but now I use it every day! I love the smell and it always leaves my hair feeling super soft. My hair used to be a matted mess after a full day of diving in the saltwater, but now I use this leave-in conditioner before and after and it works like magic! Super effective and ocean safe!
Helpful?
0 0
BluberrySea
02/08/2021
Can I give this 6 Stars? I found it by accident at a dive shop in Florida a few years ago and haven't used anything else since. Pre-dive, post dive,...More
Can I give this 6 Stars? I found it by accident at a dive shop in Florida a few years ago and haven't used anything else since. Pre-dive, post dive, post pool session, and every day. Keeps my baby fine, curly hair tangle free, soft, and manageable. I use it every time my hair gets wet....
Helpful?
0 0
Amber
02/08/2021
Being a FL girl I have been looking for environmentally friendly hair products forever. This was recommended to me by a fellow scuba diver, and I had...More
Being a FL girl I have been looking for environmentally friendly hair products forever. This was recommended to me by a fellow scuba diver, and I had my doubts. She has thick, curly hair and I have fine, thin hair. Well, I love it! It has become my everyday conditioner, combined with the shampoo/boby wash. Leaves my hair soft and gives it some body.
Helpful?
0 0
Danielle
02/06/2021
Love ALL Stream2Sea products! But this conditioner is one of my favs! It smells great and leaves my hair feeling soft + I don't feel guilty jumping ...More
Love ALL Stream2Sea products! But this conditioner is one of my favs! It smells great and leaves my hair feeling soft + I don't feel guilty jumping in the ocean after I use it!
Helpful?
0 0
John Cassese
02/06/2021
Great conditioner. I use it every day. Fantastic company
Helpful?
0 0
Kim Langford
12/10/2020
I have long, thick, curly hair that tends to dry out easily and this conditioner works really well for me. I use it as a rinse out, and together with ...More
I have long, thick, curly hair that tends to dry out easily and this conditioner works really well for me. I use it as a rinse out, and together with the S2S aloe gel, as a hydrating cream gel. Leaves me with soft, defined curls even in the humidity of a Florida summer. Love that I can go from work to swimming or diving without worrying about damaging the ecosystem 🙂
Helpful?
0 0
Tabitha Loesch
10/04/2020
This stuff is literally the greatest thing ever. My hair was so soft after a day in ocean. No tangles at all! Plus I feel better knowing I’m not weari...More
This stuff is literally the greatest thing ever. My hair was so soft after a day in ocean. No tangles at all! Plus I feel better knowing I’m not wearing anything that could hurt our oceans.
Helpful?
0 0
Undrthesea
08/05/2020
This is hands down THE best conditioner I’ve ever used. I have very long hair (down to my rear) and I’m a diver so you can imagine the beating my hai...More
This is hands down THE best conditioner I’ve ever used. I have very long hair (down to my rear) and I’m a diver so you can imagine the beating my hair takes with the sun and salt. I’ve used and tried just about everything out there to keep my hair healthy and manageable and this leave-in is amazing! The best part is that it’s light weight, hydrating and makes my hair so soft. I’ve always had to use a regular rinse out conditioner in addition to a leave-in but not with Stream2Sea Leave-in. It’s wash, towel dry, leave-in condition and GO!
Helpful?
0 0
1 2 3
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