Perfect pairing
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In Stock
Perfect pairing
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
STANDARD DELIVERY - £4
Free when you spend £25. Delivered in 2-4 working days
NEXT DAY DELIVERY - £5
Free when you spend £100.
CLICK & COLLECT - FREE
Collect your order from one of our stores within 3-5 working days.
EXPRESS CLICK & COLLECT - FREE
Collect your order from one of our stores within 1 hour. Subject to stock availability.
2 HOUR DELIVERY - £8
Free when you spend £100. Receive your order within 2 hours from a local store, service will show at checkout if available.
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.
3.0
1 Reviews
Summary of Customer Ratings & Reviews
Mrs P
Location: London
Reviews: 292
Age: 30-45
Skin Type:: Dry
Gender: Female
Didn't do much
I am a huge fan of 111 Skin specially their face masks which I think are amazing. Having used their Y Theorem Repair Serum for a long time together with their Y Theorem Day and night creams I was expecting this ampoules to be a bit like a pick me up, intense treatment. I didn’t expect a miracle but to see some instant effects and that didn’t happen . They didn’t do more than my usual 111 Skin Products and I honestly didn’t see much difference in radiance or else. Won’t buy again.