y theorem
face mask

Already a hero product among makeup artists and their famous clientele, this newly reformulated face mask is better than ever—and available exclusively at VIOLET GREY.



Given the ubiquity of sheet masks, it may be tempting to think they’re all the same. With all due respect, you may very well choose to believe that—but you’d also be incorrect. Skeptical? For evidence that certain masks are simply superior, look no further than 111SKIN, a skin care collection created by London plastic surgeon Yannis Alexandrides, MD. You may have seen its masks adorning the faces of the professionally gorgeous (think supermodels and A-list actors). But the brand’s cult following owes everything to its visible-in-the-mirror, scientifically backed results.

Here’s the backstory. Years ago, Dr. Alexandrides inserted a dissolvable collagen-based medical patch infused with N-Acetyl Cysteine (or NAC, a derivative of the amino acid L-cysteine) under the skin of a surgical patient. As he saw how effectively NAC accelerated wound healing, Dr. Alexandrides was motivated to create a topical formula that his non-surgical patients could use. The result? NAC Y2, an antioxidant-packed complex, bolstered by stable forms of vitamin C and Aesculus hippocastanum (a.k.a. horse chestnut extract).

Now, that powerhouse complex is being added to the brand’s wildly popular bio cellulose mask for a souped up, better-than-ever version that transforms skin in 20 minutes. Debuting exclusively at VIOLET GREY, the new Y Theorem Bio Cellulose Mask is a skin care geek’s dream come true, loaded as it is with ingredients proven to change the quality of one’s skin at a cellular level. The addition of NAC Y2 helps repair deeply stressed skin by stimulating production of glutathione, a powerhouse antioxidant that protects against damage while brightening the complexion. It works in concert with silk amino acids to soften texture, along with centella asiatica extract that builds collagen and calms inflammation. Plus, since this new formula is infused into an ultra-thin biocellulose fabric, the mask conforms to every facial contour—locking in hydration while also improving absorption of these active ingredients.

If your skin is irritated, dehydrated, blotchy, or otherwise imbalanced, consider the Y Theorem Bio Cellulose Mask a security blanket that calms, soothes, and nurtures it back to good health. Whereas plenty of masks are “nice enough,” this is the one to try if only immediate skin transformation will do.



“The thinness of this hydrogel mask hugs the skin perfectly, feels secure, and is loaded with plenty of serum. I saw immediate results: Skin was smoother, firmer, and intensely hydrated. An amazing mask!” —GRACE AHN, Makeup Artist

“I love this mask for giving my clients a brighter and fresher overall complexion.” —CHRISTOPHER MILES, Makeup Artist

“I did this mask before bed, and my skin felt so soft and hydrated. In the morning, I could still see my skin glowing from the night before! I’d definitely recommend it.” —MAI QUYNH, Makeup Artist


As with every product on VIOLET GREY, the 111SKIN Y Theorem Bio Cellulose Mask reached our shelves once a minimum of 70 percent of testers deemed it a winner. At that time, we added it to our skin care edit with the Violet Code’s official stamp of approval.


The VIOLET CODE is a process and set of standards by which VIOLET GREY’s committee of beauty industry experts and influencers separate hero products from the tens of thousands of options available to you on the market. The result is a curation that is truly the best in beauty from those who know best.