This cushiony cream is like an airbag for the skin.

Written By LENA RAFF


111Skin Co-Founder Dr. Yannis Alexandrides was already a household name before he launched the now-famous skin care line with partner and wife, Eva Alexandrides. A highly sought after European and American Board-Certified Cosmetic Surgeon, Dr. Alexandrides has been an international skin saver for almost 20 years, operating primarily out of his practice on London’s posh Harley Street, which is where the brand’s hero ingredient was born. NAC Y² was developed to help patients heal and promote collagen production post-procedure, and is familiar to the thousands who have already fallen madly in love with the Y Theorem Concentrate (the backbone of this cult favorite product). Now, 111Skin has answered our prayers by offering a day cream packed with this same powerhouse technology–Y Theorem Day Cream NAC Y².

This luxe, velvety cream is designed to cushion and protect even the most dehydrated and fragile skin. Its powerful antioxidant blend defends against daily environmental damage, free radicals, and pollution, making this an ideal treatment for those who live in cities or harsh climates. Hyaluronic acid fortifies the moisture barrier while NAC Y² creates the ideal environment to encourage collagen and elastin production, resulting in skin that is hydrated, densified, smooth, and radiant. 

Think of this cream as your skin care airbag, acting as a protective barrier between your beautiful face and everything the world can throw at you, be it smog, dust, dirt, or drought. As with all 111Skin products, the formula is potent, so a pea-sized amount is all you need.


It didn’t take long for VIOLET STAFFERS to become addicted to this layerable day cream. Skin was instantly moisturized and felt pillowy and plump after just one application. The texture was hydrating without being heavy, and left a velvet-like finish. Our (Zoom) meetings were filled with talk of this new cream, so we had to share it with our Committee of Industry Experts ASAP.

“This cream has the most luxe texture. It absorbs easily, layers well with serums and SPF, and looks incredible under makeup. I love that it is plumping and gets the skin glowing without ever feeling greasy.” –  MOLLY GREENWALD, Makeup Artist

“I love how hydrating this is, providing moisture all day. I would absolutely recommend this for normal to dry skin types.” –  HANNAH BIDDLE, Makeup Artist

“The combination of natural oils in this day cream makes it feel refreshing and gives it a great, light-weight feel.” –  DR. ORIT MARKOWITZ, Board Certified Dermatologist, Founder and CEO of OptiSkin.


Testers were thrilled with the results they saw after using this cream for the trial period, reporting skin that was firmer, brighter, and revitalized. They loved that they were getting protection from the elements and serious anti-aging technology, all in one product. With a response like this, 111Skin’s Y Theorum Day Cream NAC Y² is officially VIOLET CODE APPROVED and has earned a place on THE SHELVES.


The VIOLET CODE is a process and set of standards by which VIOLET GREY’s Committee of Industry Experts 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.