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Amino Acid Shampoo

All Hair Types

A mild shampoo with Coconut Oil and Amino Acids that cleanses and softens hair.

Amino Acid Shampoo is rated 4.2 out of 5 by 128.
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Amino Acid Shampoo

Amino Acid Shampoo

A mild shampoo with Coconut Oil and Amino Acids that cleanses and softens hair.

$20.00
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What It Is

This gentle shampoo with Coconut Oil and Amino Acids effectively helps to add body and fullness. Cleanse your hair with a mild shampoo that helps soften and add shine.

What It’s Good For

  • Cleanses and softens hair while helping to add volume
  • Creates a delightful, creamy lather for a delightful shampoo experience
  • For all hair types
  • A customer favorite

Key Ingredients

Kiehl's Tip

Your Favorite Formula, Now Refillable

Kiehl's Tip

In Kiehl’s ongoing mission to reduce our environmental impact, this beloved formula now comes in a refillable pouch! Made with 81% less plastic, one pouch replaces four plastic bottles to help reduce the amount of single-use plastic on your favorite Kiehl’s purchases. As we continue on our way to a Future Made Better together, select our refill pouches for less plastic used and more formula to love!

How to Use

How to Use

How to Use
  • Wet hair
  • Gently massage shampoo with Coconut Oil through hair, working formula into a lather 
  • Rinse
  • Repeat if desired 
  • In case of contact with eyes, rinse them immediately
  • Discover our conditioner with Coconut Oil to help strengthen hair and improve manageability

Future Made Better

Future Made Better

True to our founding family’s mission, we strive to improve the quality of the communities we serve by reducing our
environmental impact, formulating responsibly, and supporting charitable causes. This formula is made with:
Responsible Formulation
Responsible Formulation
Commitment to Recycling
Commitment to Recycling

Complete Your Routine

Apply these three cult favorites to keep hair healthy and soft.
Rated 2 out of 5 by from Wanted to love it I have fine hair that I've been struggling with and had high hopes that this was the golden ticket. Sorry to say i'm disappointed and still looking for a product that will hold and control the baby fine frizzy hairs around my hairline that stand out and make me sad. Its the coconut oil in the shampoo and conditioner that make my hair appear greasy and course to the touch after use. The frizzy hairs do seem to lie better, so it gets two stars for helping with that. I'll use the shampoo and conditioner on weekends, not anytime I'll be in public. I haven't used the leave in conditioner I purchased, I may try that with a different shampoo to see if that helps too.
Date published: 2020-04-24
Rated 1 out of 5 by from Don’t purchase waste of money. Half the bottle was empty when it arrived and it was too expensive to let that slide. Good luck getting ahold of this company to discuss your complaints.
Date published: 2020-04-18
Rated 1 out of 5 by from Big disappointment & total waste of money I bought this shampoo along with a friend of mine. We both soon realised how awful this is, ending up throwing it in the bin after just a few uses. I've never had this experience with any other pricy shampoo, but it successfully managed to do these things, really fast: It made my hair REALLY oily. By the end of the first week I was washing my hair every other day. And this is a vicious cycle, because as I was trying to skip a few more days, my hair & scalp kept getting annoyingly oily, itchy and with lots of dandruff. So I didn't have a choice but to wash very often - also time consuming. It completely destroys hair texture. I have wavy thick hair, but thanks to this shampoo, my hair instantly turned lighter than a feather duster. It makes the hair really thin, frizzy and without volume. This is what both me & my friend first noticed. Even after I got a fresh cut and my hair was in full weight and volume, after the first wash I was back to square one. This was really a first for me regarding shampoos. It has a weird smell. I'm not sure how to describe this, it's not horrible but definitely not pleasant. It was the first time I got the experience of washing my hair and not liking the smell of it afterwards. All in all, I really tried to love Kiehl's, but it was a total dissappointment, sorry.
Date published: 2020-04-01
Rated 5 out of 5 by from Great shampoo I have fine hair. I found this shampoo to not be heavy but made my hair so soft And shiny.
Date published: 2020-03-20
Rated 5 out of 5 by from BEST SHAMPOO EVER Your hair will be left feeling so nourished and healthy. Never using another shampoo or any other hair products aside from Keihls. I recommend using with the conditioner. Changed my life.
Date published: 2020-02-23
Rated 5 out of 5 by from I recommend to everyone! My scalp used to overly produce oil and I couldnt go more than a single day without putting up my greasy hair. Entire cans of dry shampoo couldnt help me. I have used this product for a year now and within a month I was able to go 4 days between washes with my hair down and train my hair to only need a wash twice a week. My hair is super healthy, strong, and the shiniest its ever been.
Date published: 2020-01-21
Rated 5 out of 5 by from Unfortunately, not as described In the image, the label states “silicone free, paraben free”. Unfortunately, for the past couple years that has not been the case. The shampoo that comes in the mail no longer has those labels, but the image on the site still does. If you are looking for a Paraben and silicone free shampoo, don’t be fooled.
Date published: 2019-09-11
Rated 5 out of 5 by from Will use it forever It leaves my hair so soft and clean, shiny but not greasy. You need to try to believe.
Date published: 2019-06-01
Rated 3 out of 5 by from Great shampoo, bad packaging I have been ordering this shampoo for a few years now. I have tried different shampoos but since I started using this one. I am sticking with this one. I actually do feel a difference after using it, the only thing negative about this shampoo is the packaging it comes with. Almost every time I order it, it comes leaked or the pump gets damaged, so I have to keep pouring it in to other bottles. It's sad that a cheaper shampoo is more durable than this shampoo and that's why the overall rating is 3 stars
Date published: 2019-02-04
Rated 5 out of 5 by from So fresh and so clean This shampoo truly cleans your hair without leaving it stripped. Plus the smell is AMAZING.
Date published: 2018-10-14
Rated 1 out of 5 by from Say it ain't so? I've been using the thickening shampoo for years since it was highly recommended by GQ magazine. Why was it discontinued, and why is this Amino Acid Shampoo offered as a replacement? What makes this shampoo comparable?
Date published: 2018-10-05
Rated 2 out of 5 by from Why -Ultimate thickening Shampoo Greetings !! Sincerely cannot understand why a product which works well for so many of us be discontinued. i request to advise an equivalent shampoo.
Date published: 2018-09-13
Rated 1 out of 5 by from Please bring back the Ultimate Thickening Shampoo This stuff is not the same and should not be considered an alternative to the holy grail of hair thickening agents. What a wonderful product Kiehls had in its Ultimate Thickening Shampoo product - please please please bring it back . Please at least bring it back for sale at summerset collection in troy, Michigan
Date published: 2018-09-06
Rated 1 out of 5 by from what happened to Ultimate Thickening Shampoo? Please bring back Ultimate Thickening Shampoo!!!! It gives my hair nice body, this one not so much.
Date published: 2018-07-06
Rated 1 out of 5 by from not a good substitute for the Ultimate Thickening Shampoo Please, PLEASE. bring back your discontinued Ultimate Thickening Shampoo. The Amino Acid Shampoo, which your website recommends as a substitute, leaves my hair limp and lifeless.
Date published: 2018-07-01
Rated 5 out of 5 by from 6 years later, still the best For the last 6 years, I've used the amino acid shampoo nearly daily. Of course I've used other shampoos in hotels, from samples, and occasionally I've bought one of those natural, package-free bars from the place in the mall, but I always go back to Kiehls, The amino acid shampoo is perfect for daily use. It leaves a clean, healthy, fluffy, sheen (not shiny, but natural light sheen). Doesn't over-volumize like some. Doesn't dry out hair at all. Doesn't become greasy quickly. I use a clay after to style, and the clean, moisturized hair gladly accepts the clay for style (doesn't absorb it). USE THIS SHAMPOO.
Date published: 2018-06-27
Rated 1 out of 5 by from Not what I was promised I bought this shampoo and conditioner at the Kiehl's store in Northbridge Shoppes on Michigan Ave in Chicago. I told the woman at the store that I was looking for a sulfate-free, moisturizing shampoo. She suggested this specific product- I confirmed with her again this this shampoo is paraben-free, silicon-free and sulfate-free. I took her suggestion and purchased the product. After a few washes, I noticed my hair was feeling different. I was out of the country, so I chalked it up to it being the different climate/water. Finally, upon returning home, after washing it yet again, I finally read the ingredients, did some research and found out this shampoo is NOT SULFATE-FREE. I'm particularly upset because I receive keratin-treatments for my hair, which this shampoo has ruined because of the sulfates. Keratin-treatments are pricey, and this shampoo is a little pricey.. I've lost upwards of $250 because of using this shampoo 7 or 8 times. I'm mainly disappointed because I was sold this product directly by a Kiehl's rep at a Kiehl's location, and was given bad information. I trusted their salesperson to be knowledgable enough to help me find the right product - I was wrong.
Date published: 2018-06-03
Rated 5 out of 5 by from Best shampoo and conditioner. I have tried every shampoo and conditioner around, I swear. Tea tree, stuff to straighten, curls, scalp renewal, volumizers- nothing compares. This was one of the 1st Kiehls products I tried after nearly 20 years of avoiding them. I am seriously in love. Nothing on the market makes my hair so soft. This will be in my shower for years to come. The only downside is- like many pointed out- it doesn't give the deepest clean. If I just ran or was at the beach- I'd typically give it a good rinse with something stronger but it won't leave my hair feeling like this stuff and I'll end up using it as soon as I can. Coconut smell is universal- all Kiehls products have the fresh, clean, natural smell.
Date published: 2018-05-17
Rated 4 out of 5 by from I'll Definitely Use It Again! I chose this shampoo as one of my samples in my last order. I was a little hesitant to use it at first since I color my hair and didn't want to strip the color. However, I had so much product in my hair that I just went for it, not knowing what to expect. I poured the entire contents on my head and (I figured) because of all the product in my hair, it didn't lather. So, instead of giving it a "fail" rating, I put a little of my own shampoo, which is a hair salon color-care shampoo that I've been using for years, and it created the perfect amount of lather. Well, I have to tell you that my hair never looked and felt this good in a long time. I've had long hair for years, and was considering cutting it because it was looking thin and scraggly no matter what I did. After reading some of the reviews though, I'm not sure if this will keep up, but I'm willing to give it a try and continue using this shampoo.
Date published: 2018-04-26
Rated 1 out of 5 by from Awfull One of the worst shampoo I have ever tried! It made my hair very oily and full of dandruff. It doesn't even smell nice, I don't know why it has so many good reviews. I like Kiehl's products, but with this shampoo I am very disappointed..
Date published: 2018-04-09
Rated 3 out of 5 by from Disappointing I bought a large bottle of the AA shampoo and conditioner after discovering it at my gym. I've used about 1/2 of each before noticing that both products have lost their scent and shampoo doesn't lather. Rather disappointing to find that they have such a short life expectancy. Or maybe I got a bad batch.
Date published: 2018-01-27
Rated 5 out of 5 by from love this product Really like this stuff. Much more expensive than my old shampoo, but I really don't mind spending the extra cash; it's worth every penny, thank you
Date published: 2018-01-25
Rated 5 out of 5 by from Best Lather! I have tried a few Kiehl's shampoos and this is the best so far. I love how quickly the Amino Acid shampoo lathers up and cleans my hair. It's gentle for every day use and for color-treated hair.
Date published: 2018-01-18
Rated 5 out of 5 by from Shampoo OMG, I love this shampoo and my hair adores it too. It smells heavenly and my hair is soft, manageable and healthy!
Date published: 2017-07-31
Rated 2 out of 5 by from Leaves Hair Greasy - Formula Change? I would agree with another reviewer who said that the item is inconsistent. I belonged to a gym that provided this shampoo at their facilities. Now that I changed gyms I bought a huge bottle of this shampoo and it leaves my hair feeling unclean and almost greasy. I would not recommend despite the delightful smell! I will not be purchasing again.
Date published: 2017-01-08
Rated 2 out of 5 by from Left my hair feeling coated and flat One of the few Kiehl's products that I don't love. My hair felt liked it needed to be rewashed after using this. I see that it has great reviews but I like my generic store bought shampoo better, I'd suggest you ask for a sample before you buy.
Date published: 2016-12-26
Rated 3 out of 5 by from Likesummer I tried this shampoo and conditioner while visiting my sister and loved everything about it. My hair was shiny, silky, and smelled great...others even commented! So as soon as I returned home, I ordered giant bottles of the shampoo and conditioner from a well-known department store -- and, guess what? No scent at all! I tried using more and rinsing less. Nothing. I tried shaking the bottles. Nothing! My hair is sometimes shiny and sometimes frizzy -- no consistency. I am sincerely disappointed. Maybe you changed the formula in the past couple of weeks?
Date published: 2016-09-13
Rated 2 out of 5 by from Not for thick hair. The conditioner and shampoo smell AMAZING. But, for all my thick hair, long hair, course hair girls, it's not the best product. I tried out the smallest size, and used a generous amount and it still made my hair feel unclean. I wish it would work better on thicker hair just because it has good ingredients and smells amazing. Unfortunately, not for me. Could work for others though.
Date published: 2016-06-22
Rated 5 out of 5 by from Delicious Shampoo As a single person with short hair, I can't seem to ever get through the liter size of this product haha! It's been almost a year now and I'm only half way through it - and that's with washing at least once a day, if not twice. Next time I'll get a smaller bottle and just refill it into the liter with the pump. Regardless, I like this shampoo and conditioner combo. It makes my hair very soft and I love the scent of coconut that comes with it. Beautiful product!
Date published: 2016-05-03
Rated 2 out of 5 by from Horrible Travel Packaging for a Good Shampoo This review is of the 2.5 oz size since while I enjoy this product as an every day shampoo, the travel size product fails horribly. At first I thought it may be an anomaly that my Kiehls bottles frequently leaked on domestic business travel, but after recently returning from 8 weeks of international travel which included 10 separate days of flying, I can say with certainty the travel size Kiehls bottles are no good for checked baggage airline travel. With a shower kit housing more than a dozen shampoos, face washes, creams, etc. the only bottles that leaked any during my travels were my Kiehls Creme deCorpa lotion and my Kiehls travel size shampoo. I even tried pushing air out of the bottle before the trip to give it room to expand to no avail. The only thing that prevents getting the rest of your suitcase full of lotion and shampoo is to put the Kiehls bottles in plastic baggies. While that works if the baggie is big enough and sealed, you waste the product that escapes and have to spend time cleaning out the baggie to use it for the next flight. Not sure why Kiehls products leak when other high-end brands don't. Bottom line: the shampoo is great but don't waste your money on Kiehls expensive travel sized bottle; buy a cheap travel bottle and use that instead.
Date published: 2016-03-23
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