C + Collagen™ Biocellulose Brightening Treatment Mask

A biodegradable biocellulose treatment mask powered by our proprietary energy complex that helps repair dry, damaged skin, instantly brighten and revive your complexion.
Forallor skin types.
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Bring the dermatologist office home

Immediately boost skin repair, radiance, and moisture. Fine, gel-like fibers are infused with vitamin C, collagen amino acids, and our proprietary energy complex to even out skin tone, prevent future pigment issues, and revive tired skin for a brighter, healthier-looking complexion.

C + Collagen™ Biocellulose Brightening Treatment Mask



Our Promise

How It Works


Immediate radiance

Our proprietary energy complex with CoQ10 helps tired and dull looking skin immediately appear radiant.

Visibly firm

Vitamin C, collagen amino acids, and our unique proprietary energy complex help plump and firm skin.

Improve skin tone

3-O-Ethyl Ascorbic Acid plus our unique energy complex help improve the look of uneven skin tone and prevent future pigment issues.

Boost Hydration

Fine, gel-like fibers are infused with vitamin C, collagen amino acids, to boost hydration and help repair dry, damaged skin.


Key Ingredients

3-O-Ethyl Ascorbic Acid is the most effective stabilized form of vitamin C - maintaining its acidic properties to penetrate deep into the skin, working on both the hydro and lipophilic phases of the cell to minimize and prevent the appearance of hyperpigmentation, fine lines, and wrinkles.

Collagen Amino Acids are plant-sourced collagen, which are the building blocks of peptides and proteins.

Energy Complex boosts cellular metabolism and contains antioxidant properties to protect cells and enhance functions at the nucleic level.

See all ingredients

Our Promiseplus-sign

About Dr. Dennis Gross Dr. Dennis Gross Skincare is a dermatologist-founded brand. Dr. Gross is an unwaivering advocate for his patients, consumers, humanity, bound by the Hippocratic oath to do no harm. His mission - and ours - us to improve your skin health, how it looks, but most importantly how it makes you feel. Our #1 priority is to ensure efficacy without ever compromising safety. We are cruelty-free, paraben-free, phthalate-free, sulfate-free, and vegan. With every product we take a research backed approach and formulate with only pharmaceutical-grade active ingredients to ensure superior results, without irritation.

How It Worksplus-sign

Energy-generating formula combines vitamin C with a unique energy complex that charges skin’s battery, the mitochondria, to keep it high-functioning and toned.


1. Dual Phase Vitamin C
3-O C, a superior stabilized form of vitamin C, penetrates deep into skin targeting both oil and water phases of the skin cell.


2. Repair Skin’s Battery
Superoxide dismutase & CoQ10 protect and strengthen cell membrane to repair skin’s battery.


3. Recharge Skin’s Battery
Carnitine & niacinamide increase cellular energy to recharge skin’s battery.

How To Use

Instantly revive your complexion

How To Use

Instantly revive your complexion

Step 1

Use 1x per week. On clean, dry skin, unfold the mask and peel away one layer of mesh backing. Apply the mask gel-side onto face, adjusting to face contours.

Step 2

Remove the remaining outermost layer of protective mesh. Leave on for 10-15 minutes.

Step 3

Remove and massage remaining treatment into skin. Do not rinse.

In Your Regimen

Follow with your favorite moisturizer from Dr. Dennis Gross Skincare™. Use only as directed. Avoid contact with eyes.

Frequently asked questions

  • 3-O C is a synthetic, bio-identical, water-soluble form of ascorbic acid with an oil-soluble ethyl chain attached to the front. This results in a biphasic, superior, more stable form of vitamin C.

  • Vitamin C is very active. However, there are other variables that can impact how your skin responds, including type of vitamin C, pH of the formula, other ingredients within the formula, and skin allergies. 3-O C is recommended for sensitive skin.

  • 3-O C is biphasic, meaning it is both fat and water soluble, allowing it to penetrate to all layers of the skin cell. It has better stability without compromising bioavailability. 3-O C is an ether, not an ester, which means better absorption of ascorbic acid in skin.

Complete your routine

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