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Details & care
What it is: A seven-day treatment program designed to help restore your skin.
What it does: The Y Theorem Concentrate works to nourish and strengthen skin's epidermal barrier through a blend of active ingredients specifically formulated to address compromised and stressed skin.
How to use: Place the opener onto the ampoule and break it away from the body. Dispense the solution into your hands and apply onto your face and neck, patting gently in upward motions. Be sure to use the entire ampoule. Repeat day or night for seven days alongside your usual skin care regimen.
- Includes 7 ampoules at 0.07 oz. each
- Made in Spain
- Item #6225366
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111SKIN
London-based 111SKIN is a luxury skin care brand whose formulas are developed in collaboration with space scientists. It was founded by renowned cosmetic surgeon Dr. Yannis Alexandrides, who ensures each product is carefully researched and formulated to address specific skin concerns that he treats every day, including premature aging, oily skin, acne, dullness, hyperpigmentation and dehydration.
Most helpful positive review
June 11, 2023
Reduces redness and irritation
[This review was collected as part of a promotion.] Reduces redness and irritation! Wish I could use them every night as my night serum!
Y
Reposted from 111SKIN.com
Most helpful critical review
Feb 8, 2023
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.
Brisa C.
Reposted from 111SKIN.com
5 stars
55%
4 stars
27%
3 stars
18%
2 stars
0%
1 star
0%
Sort by Most Helpful
tristan90
Reposted from spacenk.com
Sept 11, 2023
Great
It's a great high end serum- very thought out and neatly made. It's a bit overpriced as there are other options at lower prices. It has a subtle odd smell that's also interesting, I can imagine someone not liking it but I find it refreshing. 111 skin is overall a great brand and I'd say all their products work quite well.
Y
Reposted from 111SKIN.com
June 11, 2023
Reduces redness and irritation
[This review was collected as part of a promotion.] Reduces redness and irritation! Wish I could use them every night as my night serum!
Brisa C.
Reposted from 111SKIN.com
Feb 8, 2023
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.
Crista D.
Reposted from 111SKIN.com
Dec 24, 2022
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!!
Abby
Reposted from 111SKIN.com
May 10, 2022
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.
Allie Y.
Reposted from 111SKIN.com
Oct 8, 2021
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