Dr. Rossi Derm MD The Catalyst age-defying serum in black bottle on white background
closeup of two droplets of translucent skincare serum on white background
Bio-Theriac Complex: fights signs of aging and sensitivity. Saccharide blend: boosts hydration. Tamarindus Indica seed gum: helps promote smoother skin.
Two side-by-side images of a woman&
Two images of a woman&
Dr. Rossi Derm MD The Catalyst age-defying serum in black bottle, travel size

The Catalyst

Intense Renewing Serum

Rated 4.7 out of 5
Based on 61 reviews
Regular price Sale price $198.00
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Size
Description

This transformative silky daily serum, packed with Bio-Theriac® complex, is clinically proven to help even tone while delivering visibly smoother skin. While combatting skin sensitivity, this serum significantly boosts skin firmness and measurably diminishes the appearance of fine lines and wrinkles.

Appropriate for all skin types, including sensitive, dry, combination, and oily. 

Bio-Theriac® complex

Dr. Rossi’s proprietary ingredient composite harnesses the power of biomimetic sea anemone peptide, niacinamide, and hyaluronic acid in a unique, optimized ratio to help fight the visible signs of premature aging caused by sensitization in skin.

Saccharide Blend 

This specially curated blend of saccharides, or sugars, works in tandem with hyaluronic acid to help lock moisture into the skin, boosting and maintaining hydration.  

Tamarindus Indica Seed Gum

Extracted from tamarind seeds, this potent plant derivative has been shown to help promote smoother skin and, with its well documented antioxidant properties, help prevent visible signs of premature aging.

All Ingredients:  Aqua/Water/Eau, Butylene Glycol, Sea Water (Maris Aqua), Glycerin, Niacinamide, Xylitylglucoside, Anhydroxylitol, Maltodextrin, Hydroxyethylcellulose, Propanediol, Caprylyl Glycol, 1,2-Hexanediol, Xanthan Gum, Hydroxyacetophenone, Pentylene Glycol, Butyrospermum Parkii (Shea) Butter, Xylitol, Tamarindus Indica Seed Gum, Hydrogenated Lecithin, Sodium Phytate, Nasturtium Officinale Flower/Leaf/Stem Extract, Phenethyl Alcohol, Equisetum Arvense Extract, Urtica Dioica (Nettle) Extract, Porphyridium Cruentum Extract, Disodium Phosphate, Sodium Phosphate, Sodium Hyaluronate, Citric Acid, Pentapeptide-59, Phenoxyethanol, Polysorbate 60, Ethylhexylglycerin, Sodium Chloride

Gently massage onto face and neck. Use daily AM & PM.


Always Tested on Sensitive Skin
Paraben-, Fragrance-, and Dye-Free
Dermatologist Approved
Leaping bunny logo Certified Cruelty Free

Clinical Trial Results

Why Dr. Rossi?

sensitive skin, special care

Dr. Rossi embarked on a mission to rethink skin care and create de-aging solutions appropriate for all, regardless of age, gender, or level of skin sensitivity. His goal: To combat the signs of skin aging while suppressing sensitization.

After treating both those patients battling cancer and those seeking cosmetic treatments, Dr. Rossi noticed that when his patients looked better, they felt better and healed more quickly. But his patients with sensitive skin couldn’t get the results they wanted because products in the market aggravated their sensitivity.

The Breakthrough

Dr. Rossi developed his landmark formulas with his proprietary Bio-Theriac® complex, which helps correct the visible effects of aging and environmental aggressors while reducing sensitization. Dr. Rossi’s formulas exclude the use of ingredients that neither support skin health nor aid in its appearance, such as irritants, fillers, and fragrance.

The result is a relentlessly perfected and tested, revolutionary line of luxury treatments that will reveal your healthiest looking, most vibrant skin regardless of your gender identity, complexion, or skin condition. 

NEXT-GENERATION MEDICAL-GRADE SKIN CARE

"Skin sensitivity is not just discomfort—it can be tied to one of the root causes of premature skin aging. What we put on our skin matters, so if a product causes irritation it’s a big red flag and you’re probably doing more harm than good to your skin. I created this line of clean, high-performing products to restore skin to its youthful, healthy look while remaining non-irritating and safe to use on all skin types, including on the skin conditions of my cancer patients. This type of medical-grade skin care has never been done before."

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average rating 4.7 out of 5
Based on 61 reviews
  • 5 Stars
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    18 Reviews
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98% of reviewers would recommend this product to a friend
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61 Reviews
Reviewed by Dawn G., from United States
Verified Buyer
I recommend this product
Skin Type
Combination
Age Range
35 - 44
Rated 5 out of 5
Review posted

Soft , supple, hydrated glow

My title says it all, but your skin will love you after using this. My skin looked dewy and glowy all day without being oily or shiny. Texture wise, the skin feels hydrated and I’d be struggling with peeling and dry patches for weeks and with just one use they were gone! Amazing product

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Reviewed by Alessandra A., from United States
Verified Buyer
I recommend this product
Skin Type
Combination
Age Range
35 - 44
Rated 5 out of 5
Review posted

Finally found my everyday youth secret ☺️

I have a combination skin, very difficult to manage.. all the products I used for years where always too heavy on my skin and at the same time left me with some dry spots. I’m so glad Dr. Rossi created this line, this serum is phenomenal.. you don’t need too much, but your skin feels hydrated and balanced afterwards and stays for all day. Thanks to his expertise and research I could not be more very pleased with his products.

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Reviewed by Daniele M., from United States
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

❤️

Amazing product

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Reviewed by Ouch M., from United States
Verified Buyer
I recommend this product
Skin Type
Sensitive
Age Range
35 - 44
Rated 4 out of 5
Review posted

great daily serum

I am still using this to see more benefits but it goes great with the other products. It makes the skin look dewy and youthful.

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Reviewed by Curran M., from United States
Verified Buyer
I recommend this product
Skin Type
Normal
Age Range
25 - 34
Rated 5 out of 5
Review posted

Love the Catalyst!

This is such a great product. I love to use it after I shave to reinvigorate my skin! Nothing else like it on the market; I'm hooked on this one!

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