Perfect pairing
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In Stock
Complimentary Cryo Eye Mask & Rose Gold Eye Mask
When you spend $195 on 111Skin
2 eye masks. Adds to bag automatically.No Surprises at Checkout No additional charges or VAT
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Free Delivery When you spend over $50
100% Satisfaction Guaranteed Not happy? Send it back for free
Revitalise the complexion with the 111Skin Y Theorem Concentrate, a seven-day skincare program delivering the power of the NAC Y² complex to help hydrate and renew the skin.
Ideal for use on damaged skin, the NAC Y² is at the heart of this powerful formula. The complex contains a potent antioxidant-rich combination of amino acid L-cysteine, aesculus hippocastrum extract and ascorbyl phosphate, a stable vitamin C derivative.
Renowned Harley Street plastic surgeon Dr Yannis first used this formula to heal the skin from trauma. Designed as an effective seven-day program, the treatment works to repair and rejuvenate damaged skin, reducing the appearance of fine lines and wrinkles, while boosting elasticity for a radiant, renewed complexion.
Key Benefits
- Formulated with NAC Y² complex
- Rich in antioxidants
- Helps reduce the appearance of fine lines and wrinkles
- Deeply hydrating
- Boosts skin’s elasticity
- Ideal for use on damaged skin
- Cruelty-free
SKU# UK300056706
TRACKED DELIVERY - $7
Free when you spend $50
Receive your order in 7-11 working days
EXPRESS DELIVERY - $13
Free when you spend $150
Receive your order in 1-2 working days
INTERNATIONAL
We ship worldwide! Find out more about our international shipping options on our delivery page.
RETURNS
Buy with confidence thanks to Space NK’s 100% Satisfaction Guarantee
Unopened product can be returned for a full refund or exchange within 28 days of purchase with proof of purchase.
Opened or used products that you are not completely satisfied with can be returned for an exchange within 28 days of purchase with proof of purchase.
At this time we are unable to ship to P.O Boxes, A.P.O or F.P.O
4.3
9 Reviews
Summary of Customer Ratings & Reviews
Brisa C.
Reviews: 1
the smell
i can’t explain what the smell is but i literally could not use it more than 3 days and while my skins was starting to look great the smell made me feel so nauseated.
Originally posted on: 111SKIN.com
Crista D.
Reviews: 1
Recommends this product: Yes
Amazing!
I used this from an Ipsy deal and let me tell you.. after using this twice it did amazing things for my dry skin. I used it for the 7 days and couldn’t wait to use it. This is amazing stuff and now I am hooked. My face is clearer, way softer and has helped with my dark spots. IN LOVE!!
Originally posted on: 111SKIN.com
Abby
Location: United States
Reviews: 1
Recommends this product: Yes
YES!!
I love this product! I did have to come to the reviews initially to make sure it was supposed to smell as it does. However, if that means we are getting the purest product I am all for it. I can tell my skin looks healthier and just has an overall glow. I have bought this a couple of times now and will continue to do so.
Originally posted on: 111SKIN.com
Allie Y.
Location: United States
Reviews: 1
Recommends this product: Yes
seems to have some effect
I only used the purple box for a week and I guess I started to see some effect. Will continue to buy the black box to see how it goes
Originally posted on: 111SKIN.com
Melody D.
Reviews: 1
Recommends this product: Yes
Amazing Healing Powers
I’ve had two sessions of Broadband Light Treatment. The first time I used the product recommended by the esthetician, and the second time I used this set of concentrates. The difference in healing was amazing! I healed so much faster the second time using the Y Theorem Concentrate. My skin not only looks healthier after using this product, but it IS healthier! I can see where this product would be great anytime, but it is perfect for applying after a procedure. Like a magic potion! Definitely recommend. The scent is very potent, but I stopped noticing it as much after the first use.
Originally posted on: 111SKIN.com