Use the following zoom and pan buttons to control the image that follows them
Tab through the images or use the previous or next buttons to navigate each product image
Yay! You're earning points!
Highlights
Summary
Matrix Mega Sleek Anti-Frizz Topcoat Hair Serum and heat protectant defeats frizz for 96 hours with a heat-activated hydrophobic barrier. This leave in treatment seals hair to defy humidity and provides frizz-prone, vibrant hair shine.
Benefits
- Defies frizz for 96 hours & in up to 97% humidity
- Delivers instant fiber smoothness
- Provides vibrant shine that lasts up to 5 shampoos
- Offers 450°F heat protection
- Can be activated with all heat tools
- Suitable for all frizz
Features
- Highly concentrated formula without water
- Offers a longwear hydrophobic barrier on hair
- Super seals hair
Key Notes
- Enriched with Sicilian pistachio and salted caramel fragrance notes, offering a delightful gourmand experience with hints of sweet vanilla, bright lemon, toasted almond, and flirty jasmine
- This formula is so concentrated, it may have an odor when smelled directly from the bottle or immediately dispensed. This happens when the actives detect humidity and will go away when applied to your hair. Rest assured, your hair will look and smell amazing!
Item 2644448
Shake well before use. Dispense up to 5 pumps into your palm, depending on hair length, density, and texture.
Rub hands together and distribute product evenly throughout clean wet hair, starting at the mid lengths and working through the ends. Do not rinse.
Finish with blow dryer, diffuser, flat iron, and/or curler. In case of contact with eyes, rinse them immediately and thoroughly.
Dimethicone, Bis-(Morpholinomethyl C1-4 Dialkoxysiloxy) Dimethicone, Bis-Cetearyl Amodimethicone, Parfum / Fragrance, Tetramethyl Acetyloctahydronaphthalenes, Benzyl Alcohol, Vanillin, Coumarin, Citrus Limon Peel Oil, Carvone, Limonene, Benzaldehyde, Pinene, Rose Ketones
We think you'll like
12 items
Use previous and next buttons to navigate the slides of the We think you'll like Product Carousel
Similar items for you
12 items
Use previous and next buttons to navigate the slides of the Similar items for you Product Carousel
Sponsored products
12 items
Use previous and next buttons to navigate the slides of the Sponsored products Product Carousel
Questions
Ask a QuestionWhat do you want to know about this product?
Reviews
Write A REVIEWReview Snapshot
by PowerReviews
Ratings Distribution
Hair Type
Most Helpful Positive Review
I'd buy Matrix Mega Sleek everytime given the chance
I want to be clear that I received my Matrix Mega Sleek 96H Anti-Frizz Topcoat Serum for free in exchange for writing an honest review. This product is a heat-activated hair serum designed to fight frizz and result in long-lasting smoothness, especially in humid conditions. I found it to be effecti...
Most Helpful Critical Review
Does What It Claims: Fine Hair Review
First, I'd like to thank Matrix for giving me this product for free so that I could review it. But please note that this review is my own. I have very fine, dry, bleached hair. I also do professional keratin treatments to help keep my frizz at bay and to straighten it because my hair is not natural...
935 results
Game changer
Verified Reviewer
Submitted as part of a free sample program
Reviewed at

I love this matrix mega sleek 96 hour anti frizz topcoat serum it is heat activated i use a couple drops after my shower and then I blow dry my hair it smells wonderful and my hair is shiny and smooth for days.
I would buy this again
Hair Type Straight Hair
I love it!
Absolutely love
Hair Type Wavy Hair
This product was great for my hair, it makes it feel super soft and manageable throughout the day.
I would definitely buy this serum again
Verified Reviewer
Submitted as part of a free sample program
Reviewed at

I naturally have coily hair so I didn't think this anti frizz serum would work but I am really surprised with how long my blow out lasted I went 4 days in Miami humidity and it stayed sleek so I would definitely use this again

Not What I Expected — Turned Putrid After a Few Weeks
Hair Type Straight Hair
I purchased this serum at the end of August along with the Matrix shampoo and conditioner after my hairstylist recommended the product. Unfortunately, by mid-October the serum developed a putrid, spoiled seafood smell. At first I thought it might be a combination of other products, but after using the serum alone, I realized it was the source. By the time I brought it back to Ulta, I had already passed their 60-day return window — which I don't think is right, especially since the bottle says it's good for 12 months after opening. A product shouldn't smell that horrible after just a few weeks. Ulta or Matrix should at least offer store credit. I will not be purchasing this product again.
