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Matrix 2025 Mega Sleek Shampoo 300ML With Shadow

Mega Sleek

Mega Sleek

Smoothing Shampoo

Smoothing shampoo provides frizz control and humidity protection for all types of frizz-prone hair
Protects Hair Against Humidity Protects Hair Against Humidity
Reduce Frizz Coarse, Unruly Hair Reduce Frizz Coarse, Unruly Hair
Details

Matrix Mega Sleek Anti-Frizz Smoothing Shampoo formulated with Oleic acid and Jojoba oil balances fiber moisture in both high and low humidity, gently cleanses hair while defeating frizz at all seasons. Hair is smooth, shiny and poof-free, for frizz-free hair.

How To Use

Apply a quarter size amount of product, lather and rinse. Follow with Mega Sleek Smoothing Conditioner, Smoothie Supreme Mask, and 96H Topcoat.

Ingredients

AQUA / WATER / EAU, SODIUM C14-16 OLEFIN SULFONATE, COCAMIDE MEA, GLYCERIN, COCAMIDOPROPYL BETAINE, GLYCOL DISTEARATE, SODIUM LAUROYL SARCOSINATE, PARFUM / FRAGRANCE, HEXYLENE GLYCOL, CITRIC ACID, SODIUM HYDROXIDE, SODIUM CHLORIDE, SODIUM BENZOATE, PEG-55 PROPYLENE GLYCOL OLEATE, PROPYLENE GLYCOL, COCO-BETAINE, HYDROXYPROPYL GUAR HYDROXYPROPYLTRIMONIUM CHLORIDE, CARBOMER, SALICYLIC ACID, BENZOIC ACID, TETRAMETHYL ACETYLOCTAHYDRONAPHTHALENES, OLEIC ACID, SIMMONDSIA CHINENSIS SEED OIL / JOJOBA SEED OIL, POLYQUATERNIUM-7, VANILLIN, BENZYL ALCOHOL, COUMARIN, CITRUS LIMON PEEL OIL, CARVONE, LIMONENE, CI 19140 / YELLOW 5, CI 17200 / RED 33

Matrix 2025 Mega Sleek Reno Ecomm Benefits Shampoo
Matrix 2026 DMI Katseye Ecomm ATF Daniela Solo
Matrix 2025 ROW Mega Sleek Retail Range Mask

Professional Anti-Frizz Haircare

Matrix 2025 Mega Sleek Reno Ecomm Shampoo 300ml

Cleanse

Mega Sleek Shampoo
Matrix 2025 Mega Sleek Reno Ecomm Conditioner 300ml

Condition

Mega Sleek Conditioner
Matrix 2025 ROW Mega Sleek Reno Ecomm Mask

Treat

Mega Sleek Smoothie Supreme Mask
Matrix 2025 DMI Mega Sleek Topcoat eComm Product

Smooth

Mega Sleek 96H Anti-Frizz Topcoat
Matrix 2025 Mega Sleek Reno Ecomm Ingredients Technology
Matrix 2025 Mega Sleek Reno Ecomm Fragrance ATF
Matrix 2025 Mega Sleek Shampoo Pack Texture

Frequently Asked Questions

What Is Mega Sleek Smoothing Shampoo?

A smoothing shampoo formulated with oleic acid, a fatty acid known for moisturization and smoothing, and jojoba oil known to moisturize without a greasy feel.

Who Is Mega Sleek Smoothing Shampoo For?

Anyone with unruly, hair looking for smoothing and frizz protection.

What are the Benefits of Mega Sleek Smoothing Shampoo?

Immediately after using Shampoo + Conditioner or Mask: 

  • Hair looks & feels healthy + smooth root to tip 
  • Hair looks & feels soft, conditioned/nourished, moisturized/hydrated 
  • Hair looks shiny and feels silky 
  • Hair does not feel weighed down or greasy; Hair does not look poofy 
How is Mega Sleek Smoothing Shampoo Used?

Apply a quarter size amount of product, lather, and rinse.

Can Mega Sleek Smoothing Shampoo be used on all hair types, textures and patterns? ?

Yes, Mega Sleek Smoothing Shampoo can be used on all hair textures from fine to coarse and all curl patterns from straight to coiled. All Mega Sleek products are suitable for hair that is color-treated and/or highlighted and for natural hair. 

Rating Snapshot

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1066 reviews with 5 stars.
290 reviews with 4 stars.
83 reviews with 3 stars.
23 reviews with 2 stars.
76 reviews with 1 star.

Overall Rating

4.5

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Average Customer Ratings

Most Helpful Favorable Review

HELP - Smoothing color-treated hair

12 years ago
I love the smoothing effect of this product. HOWEVER..... it removes the color (from hair dye) after washing my hair a few times. I wish that the company created a product which smoothed hair for those of us who colored our hair.
165 people found this helpful
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Most Helpful Critical Review

Doesnt work

10 years ago
Bought this shampoo, conditioner, and leave in conditoner. Did nothing for my hair, if anything it made my hair frizzier and more unmanageable. Very unimpressed.
37 people found this helpful
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1 to 8 of 1538 Reviews .
1 – 8 of 1538 Reviews
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  • Most Recent

New Formula, Poor Results

7 days ago
The new formula is disappointing. I’ve used this product for MANY years with great results, but now with the change in ingredients, it seems to do the opposite of what it claims. Won’t buy it again.

No, I do not recommend this product.

Helpful?
Response from Matrix:
6 days ago
ccc
We are so sorry to hear that the updated formula has disappointed you after many years of great results. Hearing that the change in ingredients is doing the exact opposite of what it claims for your hair is truly frustrating, and we completely understand why you won’t be repurchasing. We are passing your feedback directly to our product development team. Please contact Matrix Consumer Care at 1-888-777-6396 (Monday–Friday, 9:00 AM – 5:30 PM EST) so we can assist you.

Heavily coating and dry my hair

8 days ago
I've been using the reg sleek shampoo and conditioner and its been great. I bout the liters of the shampoo and conditioner and it has not been working for me. My hair feels heavily coated and dry. I cant even use it anymore. What did you change?
Helpful?
Response from Matrix:
7 days ago
Consumer Care Center
Thank you for reaching out and sharing your experience, and we are so truly sorry to hear that your new liter bottles are leaving your hair feeling heavily coated and dry.

Sad about the change

10 days ago
Extremely disappointed in the new formula after using this and food for soft along with the serum, I find myself searching on Google for known alternatives now. This definitely does not work for smoothing the way it used to. Unlike other reviews the smell did not bother me but otherwise it’s a total let down and I won’t be buying anymore. It’s unfortunate I just bought two large bottles for as expensive as they are!

No, I do not recommend this product.

Helpful?
Response from Matrix:
7 days ago
ccc
Thank you for sharing your feedback with us, and we are so truly sorry to hear that the updated Mega Sleek formula has let you down, especially after pairing it with Food For Soft and investing in two expensive, large bottles. It is incredibly frustrating to find yourself searching Google for alternatives to a staple routine you relied on for smoothing. While you didn't mind the scent, we hear you loud and clear on the loss of smoothing performance. We refuse to let your investment in two large bottles go to waste, so please contact our Matrix Consumer Care team directly at 1-888-777-6396 (Monday–Friday, 9:00 AM – 5:30 PM EST) so we can issue a full refund voucher for both bottles and help make this right.
11 days ago
Disappointed in the formula change. My hair is way more tangled after using. Please go back to original formula. Leaves hair dull and heavy

No, I do not recommend this product.

Helpful?
Response from Matrix:
7 days ago
Consumer Care Center
We are so sorry to hear that the updated formula is leaving your hair dull, heavy, and tangled. We understand how frustrating it is when a product no longer gives you the smooth, manageable results you count on, and we are passing your feedback directly to our team. Please reach out to Matrix Consumer Care at 1-888-777-6396 so we can assist you with a refund voucher and help make this right.

Very upset about product change for mega sleek

14 days ago
I am so mad 😡 I’ve been using matrix mega sleek for YEARS and I go to buy my favorite hair care and you have changed the formula!?! The smell is atrocious! Shame on you for changing. Looks like I’ll be finding a new brand! You are going to lose money on this. Absolutely ridiculous!
Helpful?
Response from Matrix:
7 days ago
Consumer Care Center
We’re so sorry the new Mega Sleek formula—and especially its fragrance—has disappointed you after years of loyalty. We understand how upsetting it is when a product you love changes, and we appreciate you sharing your feedback. We’ll pass your comments along to the team. Please contact Matrix Consumer Care at 1-888-777-6396 for assistance.

Go back to original formula

17 days ago
The new formula sleek shampoo/Conditioner is horrendous, the smell is so overwhelming it causes nausea. The added dyes do more harm then good, removing the shea butter, has wrecked this amazing shampoo conditioner combo, I have recommended this line to my clients for 10 years, I can no longer do that, as they have all returned it to me. This is more then disappointing. Hair is now frizzy, hard to brush. Where it did not used to be. How to fix this issue, Go back to the amazing original formula. It was wonderful, smooth, made long hair look amazing.

No, I do not recommend this product.

Helpful?
Response from Matrix:
11 days ago
Consumer Care Center
We are deeply sorry that the renovated Mega Sleek formula has compromised your work and resulted in client returns after ten years of trusted recommendations. You diagnosed the exact formulation issues: removing the rich Shea Butter in favor of a lighter Jojoba Oil base stripped away the essential slip needed for detangling and frizz control, while the added synthetic dyes and overpowering caramel-pistachio fragrance have proven overwhelming in the salon chair. Your professional reputation means everything to us, and we are escalating your direct feedback straight to our professional salon division.

I would buy this product again and again!

18 days ago
I love the matrix smoothing shampoo. I use it with the matrix, smoothing conditioner, and the matrix hair mask. It smells absolutely amazing and not only is it lightweight but it doesn’t leave your hair greasy or with flakes and residue. It leaves my hair feeling so soft and shiny and no tangles. It even tamed my ridiculous frizz that was so bad. I wish I had a picture to show for that, but I do not unfortunately but just know this product does work and it does not dry your hair out!
Helpful?

Used to be great

21 days ago
The new fragrance is awful! I now have an entire liter of shampoo and I hate the way it smells. It needs to have huge letters on the bottle telling customers the scent is completely different, so we don’t make the mistake of purchasing a product that is so stinky . I am so disappointed.
Helpful?
Response from Matrix:
20 days ago
Consumer Care Center
We are deeply sorry for the disappointment and frustration you experienced with the updated Mega Sleek shampoo, especially after purchasing an entire liter bottle. You make an entirely fair and valid point: when a signature fragrance undergoes such a drastic shift—from our subtle classic salon scent to a warm, sweet caramel-pistachio profile—it should be clearly and boldly labeled on the bottle so loyal customers aren't caught off guard. Scent is an intensely personal part of your daily routine, and no one should be stuck with a full liter of product they dislike. We are passing your direct feedback about packaging transparency and the fragrance overhaul to our brand marketing leadership. We refuse to leave you stuck with a liter bottle that you hate, so please contact our Matrix Consumer Care team directly at 1-888-777-6396 (Monday–Friday, 9:00 AM – 5:30 PM EST).
1 – 8 of 1538 Reviews