Walmart US Ecommerce Website

GENERAL MERCHANDISE

PHARMACY

GROCERIES

VUDU

SPARK

PHOTO

ADVERTISING

SAVINGS CATCHER

GIFTCARDS

INHOME

AFFILIATE

ONEAPP

LOTUS

HELP

SMART_REORDER

GROCERY

CONV_COMMERCE

SURGEON GENERAL'S WARNING: Smoking Causes Lung Cancer, Heart Disease, Emphysema, And May Complicate Pregnancy.

SURGEON GENERAL'S WARNING: Quitting Smoking Now Greatly Reduces Serious Risks to Your Health.

SURGEON GENERAL'S WARNING: Smoking by Pregnant Women May Result in Fetal Injury, Premature Birth, And Low Birth Weight.

SURGEON GENERAL'S WARNING: Cigarette Smoke Contains Carbon Monoxide.

DynamicCardCarousel For Tobacco Warnings

NEW AddToCart Wed Apr 09 2025 3:20 PM PDT

Related items to consider

NEW BuyBoxAd Wed Apr 09 2025 3:34 PM PDT

NEW BuyBoxRatingsAndReviews Wed Apr 09 2025 3:11 PM PDT

NEW FlowerDeliveryDate Wed Apr 09 2025 3:16 PM PDT

I want shipping & delivery savings with

#0071dc

NEW Fulfillment Wed Apr 09 2025 3:18 PM PDT

NEW GeneralWarningsPlaceholder Wed Apr 09 2025 3:48 PM PDT

NEW GiftingEligibilityBadge Wed Apr 09 2025 3:17 PM PDT

NEW ItemRelatedShelves Wed Apr 09 2025 3:35 PM PDT

more

Item prices may vary between online (for pickup, shipping or delivery) and in club. Item prices do not include fees for pickup, shipping or delivery (if applicable) unless noted in the item description.

NEW LegalPriceDisclaimer Wed Apr 09 2025 3:15 PM PDT

NEW ListsAndRegistries Wed Apr 09 2025 3:22 PM PDT

NEW MarqueeDisplayAd Wed Apr 09 2025 3:35 PM PDT

NEW MarqueeDisplayAd Wed Apr 09 2025 3:39 PM PDT

NEW PriceInformation Wed Apr 09 2025 3:13 PM PDT

NEW ProductDescriptionPlaceholderATF Wed Apr 09 2025 3:32 PM PDT

NEW ProductDescriptionPlaceholder Wed Apr 09 2025 3:40 PM PDT

NEW ProductIndicationsPlaceholder Wed Apr 09 2025 3:43 PM PDT

NEW ProductName Wed Apr 09 2025 3:10 PM PDT

NEW ProductReturnPolicy Wed Apr 09 2025 3:21 PM PDT

NEW ProductSpecificationsPlaceholder Wed Apr 09 2025 3:41 PM PDT

NEW ProductStickyBuyBox Wed Apr 09 2025 3:23 PM PDT

NEW ReviewsPlaceholder Wed Apr 09 2025 3:51 PM PDT

NEW Variants Wed Apr 09 2025 3:14 PM PDT

Sams WCP AddonServicesRedesign Mon Jul 27 2026 10:34 PM PDT

Sams PDP BrandLink Wed Apr 09 2025 2:02 PM PDT

Sams PDP Breadcrumb Wed Apr 02 2025 8:40 PM PDT

Sams PDP ItemFitment Wed Apr 09 2025 2:00 PM PDT

Sams PDP ProductFlags Wed Apr 09 2025 3:09 PM PDT

Sams PDP ProductImages Wed Apr 02 2025 8:49 PM PDT

Sams SkylineDisplayAd Thu Jul 10 2025 11:02 AM PDT

Sams SNAP Badging Wed Jan 21 2026 8:38 PM PST

Apply Now

Get a $30 statement credit when you open an account and use it to make $30 in eligible Sam's Club purchases within 30 days¹.

¹Offer subject to credit approval. To qualify, you must (i) apply and be approved for a Sam’s Club® credit card account and (ii) use your new account to make Sam’s Club purchases totaling $30 or more (excluding cash advances, gift card sales, alcohol, tobacco and pharmacy purchases) within 30 days of date of account opening. When you open an account online or with your mobile device, purchases cannot be made at in-club registers until the physical card is received. Your physical card should arrive in 7-10 business days from date of account opening. A $30 credit will post to the account within 90 days after the qualifying purchases are made. Offer is valid for newly opened accounts only and each account is eligible for only one $30 offer. We reserve the right to discontinue or alter the terms of this offer any time.

Synchrony Credit Card Banner Anonymous

Complete your purchase with these

PDP boughtTogether SoftBundles Wed Apr 09 2025 3:49 PM PDT

PDP RR0 ItemCarousel Wed Apr 09 2025 3:38 PM PDT

PDP RR1 ItemCarousel Wed Apr 09 2025 3:52 PM PDT

K18 Leave-in Molecular Repair Hair Mask, 1.7 fl. oz.

Instructions

<p>In just four minutes, the K18 Leave-in Molecular Repair Hair Mask reverses hair damage on a molecular level. K18 PEPTIDE has been proven to repair bleach and color damage, as well as chemical services and heat. It provides immediate and lasting results that restore hair strength, softness, smoothness, and bounce.</p> <h3>Renews Hair Strength and Elasticity</h3> <p>This hair mask is designed to provide smooth, bouncy hair by renewing its core strength and elasticity at the innermost layer. With its unique K18 PEPTIDE formula, this hair mask not only repairs bleach and color damage but also combats the effects of chemical services and heat exposure.</p> <h3>Hair Mask Starts Repairing Your Hair Immediately</h3> <p>The K18 Leave-in Molecular Repair Hair Mask starts repairing your hair immediately and lasts beyond your next wash, ensuring ongoing reparative results.</p> <h3>Suitable for All Hair Types</h3> <p>This hair mask is suitable for all hair types, as it works on a molecular level where all hair is the same. Whether you have straight, wavy, curly, or coily hair, the K18 Leave-in Molecular Repair Hair Mask helps to improve hair quality and texture.</p> <p><strong>Disclaimer:</strong> <em>Sam’s Club is committed to offering quality products and services at an exceptional value. To serve this goal, these products were not purchased directly from the manufacturer or its authorized distributor but from a third-party dealer with strict controls to verify authenticity and quality. Some manufacturers limit or exclude their warranties on these products. However, these items remain fully covered by Sam’s Club’s 100% Merchandise Satisfaction Guarantee. If you are not satisfied with your purchase for any reason, return your item and we'll replace it or provide a refund.</em></p>

Brand

Size

Product Net Content UOM

<ul>  <li>Leave-in hair treatment mask</li>  <li>Rebuilds hair from the inside out</li>  <li>Proven to reverse hair damage in 4 minutes</li>  <li>Leave-in formula provides lasting results</li> </ul>

Specifications

<ul>
<li>Leave-in hair treatment mask</li>
<li>Rebuilds hair from the inside out</li>
<li>Proven to reverse hair damage in 4 minutes</li>
<li>Leave-in formula provides lasting results</li>
</ul>

I absolutely love K18. My hair has been damaged for so long and so frizzy.  I decided to try K18. I didn't have much hope. I noticed a huge difference with the first use. My hair afterwards was so soft and frizz free. My 2nd use, even better! The improvement in my hair is amazing! I'll be repurchasing again. BTW, the K18 is 100% authentic!

Lives up to the hype.

love the product! it relaxes my curls with no frizz my only complain why did theytake away the larger size!!

bring back the larger size

Great product. I wish they would bring the bigger size back!

SAMS bring back the larger size! 
We LOVE this product

Great product

Best hair mask ever

This product was great worked when nothing else has worked for me. Sure wish you would get it back.

Beautiful

I previously bought this product at Sephora and it instantly repaired my bleached hair. I bought my second bottle at Sam's Club and it doesn't do the same thing. I have to use a lot of product and it doesn't seem to work as well as the same product I bought at Sephora. It seems like a fake product.

Like a fake

This is more than double the price of the 5 ounce size you used to sell. Please bring that back.

k18 leave-in molecular repair hair mask, 1.7 fl. oz. Front-facing white 50 ml/1.7 fl. oz. pump bottle labeled K18 Biomimetic Hairscience beside its white-and-orange retail box displaying "leave-in molecular repair hair mask" in English and French; studio background, matte finish bottle, often carried as a travel-size leave-in treatment.

K18 Leave-in Molecular Repair Hair Mask, 1.7 fl. oz.

Shipping

Highlights

MONDAY Haircare ULTIMATE MOISTURE Gift Set $24.00 $0.37/foz

MONDAY Haircare ULTIMATE MOISTURE Gift Set