3.0
verified purchase
I liked it at first! Then it started to make my hair feel a little stiff.
9/4/2026
What it is: A color-safe, pH-optimized shampoo to effectively cleanse while maintaining hair health, preventing frizz, preserving color, and enhancing shine.Hair Texture: Straight, Wavy, Curly, and CoilyHair Type: Fine, Medium, and ThickHair Concerns:- Color Safe- Damage, Split Ends, and Breakage- FrizzKey Benefits: - This pH-optimized formula helps minimize damage during washing and supports hair health and strength- Prevents tangling + frizz, preserves color, enhances shine- Microbiome-certified to help maintain scalp health and preserve scalp’s natural microbiomeHighlighted Ingredients:- K18PEPTIDE™: Replenishes protein lost during washing to fortify hair.- Plant-Derived Surfactants: Create a gentle, high-foaming cleanse without leaving buildup behind.Ingredient Callouts: It is gluten-free and cruelty-free.What Else You Need to Know: This pH-optimized formula helps reduce excess swelling of the hair cuticle during washing to help prevent damage and tangling, reduce frizz, preserve color, and enhance shine. It is formulated with the K18PEPTIDE™ to replenish hair during washing. This shampoo is also scalp-microbiome friendly and gentle enough for every wash.Fragrance Description: This shampoo has a clean citrus scent.Clinical Results: Results observed in a consumer test of 35 subjects after 21 days of consistent use of the DAMAGE SHIELD pH protective shampoo: - 91% said hair looks healthier- 91% said hair feels smoother- 91% said hair does not feel weighed downClean at Sephora is our commitment to offering effective products without certain ingredients, such as parabens, sulfates, phthalates, and mineral oils. Learn more here.This product is an Allure Best of Beauty award winner.
Design: 8.5 oz
International delivery
Shipping calculated at checkout
Returns & exchanges
Within 30 days of delivery
What it is: A color-safe, pH-optimized shampoo to effectively cleanse while maintaining hair health, preventing frizz, preserving color, and enhancing shine.Hair Texture: Straight, Wavy, Curly, and CoilyHair Type: Fine, Medium, and ThickHair Concerns:- Color Safe- Damage, Split Ends, and Breakage- FrizzKey Benefits: - This pH-optimized formula helps minimize damage during washing and supports hair health and strength- Prevents tangling + frizz, preserves color, enhances shine- Microbiome-certified to help maintain scalp health and preserve scalp’s natural microbiomeHighlighted Ingredients:- K18PEPTIDE™: Replenishes protein lost during washing to fortify hair.- Plant-Derived Surfactants: Create a gentle, high-foaming cleanse without leaving buildup behind.Ingredient Callouts: It is gluten-free and cruelty-free.What Else You Need to Know: This pH-optimized formula helps reduce excess swelling of the hair cuticle during washing to help prevent damage and tangling, reduce frizz, preserve color, and enhance shine. It is formulated with the K18PEPTIDE™ to replenish hair during washing. This shampoo is also scalp-microbiome friendly and gentle enough for every wash.Fragrance Description: This shampoo has a clean citrus scent.Clinical Results: Results observed in a consumer test of 35 subjects after 21 days of consistent use of the DAMAGE SHIELD pH protective shampoo: - 91% said hair looks healthier- 91% said hair feels smoother- 91% said hair does not feel weighed downClean at Sephora is our commitment to offering effective products without certain ingredients, such as parabens, sulfates, phthalates, and mineral oils. Learn more here.This product is an Allure Best of Beauty award winner.
- SKU
- 2-P509691
- Brand
- K18 Biomimetic Hairscience
- Category
- beauty / hair-care / shampoo
- Variants
- 2
Customer reviews
2.0
verified purchase
Makes hair look shiny however introduces a dry scalp and hair shedding. Hair gets greasy fast, next day after washing.
8/29/2026
5.0
verified purchase
can’t go without it.
Been using this shampoo for about a year and have noticed my hair become so shiny & my frizz is eliminated. I tend to wash my hair everyday because of my intense work out routine & this never dries or irritates my scalp. Whenever I switch samples, I notice the difference in my hair and go back to k18z
8/24/2026
5.0
verified purchase
AMAZING Product…HORRIBLE packaging care!
I absolutely love this shampoo! It’s the best and it’s not cheap! Very saddened that this pricy shampoo has such an unthoughtful package care! I lost about a week of product due to horrible packaging! I know you are better, Sephora!
8/2/2026
2.0
verified purchase
Not the best
Very mid product. I prefer the k18 peptide shampoo by a long shot. Seems like they changed the formula for damage shield. Side note: it does contain sodium chloride so don’t use on a keratin!
6/6/2026
5.0
verified purchase
My hair is healthier!
I have been using the Damage Shield shampoo from K18 for a few years now and it has been amazing for my hair. My hair is healthier, has less split ends and overall less frizz. This shampoo lathers beautifully. A little bit goes a long way here. The bottle lasts me a while.
5/1/2026
3.0
verified purchase
40/60 purchase
One thing I really liked is how well it cleans my scalp—especially before going in with a hair mask. It leaves my scalp feeling fresh without that overly stripped, squeaky feeling you get from harsher shampoos, which I appreciated. That said, I did notice that at times my hair felt a bit dry and slightly weaker after using it. Because of that, I found it works best when you’re mindful of how much you use. A little truly goes a long way, and I had better results doing a lighter first wash followed by a slightly more thorough second shampoo. I’d recommend this shampoo for people who struggle with oiliness or have damage and breakage, since it does a good job at cleansing without completely compromising the hair. I used it long enough to see a slight improvement in my hair’s overall condition, which is a plus. However, despite the benefits, I’m not completely sold on repurchasing it. It works well, but for me, it didn’t quite stand out enough to become a staple.
4/18/2026
5.0
verified purchase
Soooo good! My hair has gotten so much healthier. I love the way it feels in the shower.
3/18/2026
2.0
verified purchase
This product helped reduce my product buildup and leaves my scalp feeling clean but I've been shedding hair like crazy! I lose a lot of hair already but this is never before seen for me
11/12/2025
5.0
verified purchase
Best!
I love this! It keeps my hair clean for 4 days. Amazing! My hair is long, straight, very fine and has hi lights. I was using purology and my stylist suggested a change . This is wonderful.
11/11/2025
