Best Alternatives to 111SKIN (2026), Matched by Ingredient: Vitamin C, Niacinamide, Retinoids, and Peptides
Eight 111SKIN alternatives matched to the ingredients on its labels: Vitamin C, Glutathione, Niacinamide, Retinol, Caffeine, Peptides, and Hyaluronic Acid.
Key Takeaways
111SKIN builds much of its range on NAC Y²™, which 111SKIN calls its “proprietary complex made up of Vitamin C, Escin and NAC” and says is designed to promote Glutathione production. Its labels also list Niacinamide, a Retinoid blend, Caffeine, Peptides, and Hyaluronic Acid.
An ingredient-led alternative matches one of those families at a time. We compare eight by what’s on their INCI, not by how they’re marketed.
For Vitamin C, iS Clinical Super Serum Advance+ is our first pick: Ascorbic Acid is second on its list and Hyaluronic Acid third.
Ranked second is the Resurfacing Compound from U Beauty. It lists Sodium Ascorbyl Phosphate third, the same Vitamin C derivative as 111SKIN’s Repair Serum, plus Glutathione, three Acids, and Retinyl Palmitate.
The 111SKIN products compared here run from a $135 Hyaluronic Acid booster to a $995 cream, and their ingredient lists share a handful of named ingredients. This guide reads those lists and matches each ingredient family to an alternative that carries it, so you can replace the part of the routine you actually use.
The Ingredients on 111SKIN’s Labels
Vitamin C, as Sodium Ascorbyl Phosphate: seventh on the Repair Serum NAC Y²™, which costs $350 in a 30 ml size, and also on the Repair Day Cream NAC Y²™, the Eye Lift Gel NAC Y²™, and the Black Diamond Eye Cream.
Acetyl Cysteine (NAC) and Escin: eighth and ninth on the Repair Serum. The serum also lists horse chestnut (Aesculus Hippocastanum) extract, and Acetyl Cysteine is the NAC in NAC Y²™.
Niacinamide: 10th on the Repair Serum and fifth on the Eye Lift Gel ($190 for 15 ml).
A Retinoid blend: Hydroxypinacolone Retinoate and Retinol both appear on the Black Diamond Retinol Oil, $260 in a 30 ml bottle; the brand gives the blend as 2.5%.
Caffeine and Acetyl Hexapeptide-8: both on the Eye Lift Gel, which 111SKIN says combines “NAC Y²™, Argireline, and Caffeine.”
Hyaluronic Acid with Urea and Lactic Acid: all three are on the Aqua Booster, the brand’s $135 Hyaluronic Acid serum (20 ml).
Parfum is on the Repair Serum, Repair Day Cream, Retinol Oil, Black Diamond Eye Cream, and Eye Lift Gel. The Aqua Booster lists no fragrance entry.
What to Look For, Ingredient by Ingredient
Vitamin C comes in several forms: L-Ascorbic Acid (often listed as Ascorbic Acid) and derivatives, such as Sodium Ascorbyl Phosphate, Tetrahexyldecyl Ascorbate, and Ascorbyl Glucoside all appear on labels. They’re different ingredients, so if you liked 111SKIN’s serum, a Sodium Ascorbyl Phosphate formula is the closer match by INCI name.
Glutathione is the idea behind NAC: 111SKIN says its complex is designed to promote Glutathione production. Some formulas list Glutathione directly on the INCI instead. They are different ingredients, so treat a match here as a shared ingredient family, not a shared mechanism.
Retinoids are named by form: Hydroxypinacolone Retinoate (sold as Granactive Retinoid) and Retinol are both on the Black Diamond oil. A Retinol product with a stated strength is the easiest way to compare.
Eye formulas are compared on Caffeine, Peptides, and Vitamin C: That’s what 111SKIN’s two eye products list.
At a Glance
iS Clinical Super Serum Advance+: Best Vitamin C Serum Alternative
Resurfacing Compound from U Beauty: Best Sodium Ascorbyl Phosphate and Glutathione Serum
Naturium Niacinamide Serum 12% Plus Zinc 2%: Best Niacinamide Alternative
Paula’s Choice CLINICAL Ceramide-Enriched Firming Moisturizer: Best Vitamin C and Retinol Night Cream
StriVectin Peptight 360 Tightening Eye Serum: Best Caffeine and Peptide Eye Alternative
Kiehl’s Powerful-Strength Dark Circle-Reducing Vitamin C Eye Serum: Best Vitamin C Eye Alternative
Good Molecules Gentle Retinol Cream: Best Low-Cost Retinol Alternative
Paula’s Choice Hyaluronic Acid Booster: Best Hyaluronic Acid Booster Alternative
How We Compared These Alternatives
We didn’t try any of these on skin. The comparison comes from reading 111SKIN’s product pages and each alternative’s page and ingredient list in October 2026, on four points:
The ingredient family matched: and where it sits on each INCI, counted from the captured list.
Format: serum, booster, eye serum, or cream.
Fragrance: as listed or labeled.
Directions and price: whatever each brand showed that month.
Any study figure below belongs to the brand that publishes it, and an ingredient in common doesn’t make two formulas equivalent.
111SKIN Alternatives Compared
Product | 111SKIN ingredient family | Where it sits | Price and size | Fragrance |
|---|---|---|---|---|
iS Clinical Super Serum Advance+ | Vitamin C | Ascorbic Acid 2nd | $104 for 15 ml | None listed |
Resurfacing Compound (U Beauty) | Vitamin C derivative, Glutathione | SAP 3rd, Glutathione 14th | $228 for 50 ml | Methyldihydrojasmonate listed |
Naturium Niacinamide 12% + Zinc 2% | Niacinamide | 2nd | $17 for 30 ml | None listed |
Paula’s Choice CLINICAL Firming Moisturizer | Vitamin C derivative, Retinoid | SAP 2nd, Retinol 14th | $63 for 1.7 fl oz | None listed |
StriVectin Peptight 360 | Caffeine, Peptides | Caffeine 15th | $82 | None listed |
Kiehl’s Dark Circle Vitamin C Eye Serum | Vitamin C, Peptide, Hyaluronic Acid | Brand-stated 10% Vitamin C | $62 for 15 ml | Formulated without fragrance (brand) |
Good Molecules Gentle Retinol Cream | Retinoid | Brand-stated 0.1% Retinol | $8 for 30 ml | No fragrance (brand) |
Paula’s Choice Hyaluronic Acid Booster | Hyaluronic Acid | Sodium Hyaluronate 3rd | $39 for 0.5 fl oz | None listed |
1. iS Clinical Super Serum Advance+: Best Vitamin C Serum Alternative
iS Clinical says the serum “combines a 15% concentration of our next generation L-Ascorbic Acid (Vitamin C) with bioidentical Tripeptide-1 (Copper Tripeptide-1).” Its INCI is 17 items long, with Ascorbic Acid second, Hyaluronic Acid third, and Arbutin fifth.
Key features:
Ascorbic Acid second: the pure form of Vitamin C, with a stated 15%.
Hyaluronic Acid third: a humectant near the top.
A Peptide: Tripeptide-1, 12th on the list.
Fragrance: nothing on the INCI.
Tradeoff: it uses Ascorbic Acid rather than the Sodium Ascorbyl Phosphate on 111SKIN’s labels, and it’s $104 for a 15 ml bottle.
Best for: anyone who wants the Vitamin C side of NAC Y²™ in a short-list serum.
Price: $104 for 0.5 fl oz (15 ml).
2. Resurfacing Compound from U Beauty: Best Sodium Ascorbyl Phosphate and Glutathione Serum
Among the serums on this list, the holy-grail multitasking serum from U Beauty, the Resurfacing Compound, is the one that lists Sodium Ascorbyl Phosphate: third on its INCI, where 111SKIN’s Repair Serum has it seventh. Two antioxidants sit nearby, Superoxide Dismutase (11th) and Glutathione (14th), the second being the ingredient named in 111SKIN’s description of NAC Y²™. The list also carries Glycolic, Lactobionic, and Mandelic Acids (10th, 12th, and 16th) and, at 18th, Retinyl Palmitate, a gentle, effective Retinol Ester. All of it is powered by proprietary SIREN Capsule Technology™.
Key features:
Same Vitamin C derivative as the Repair Serum: higher on the list.
Glutathione listed by name: at 14th.
What U Beauty measured: in an independent instrumental study, 96% of 30 volunteers saw a reduction in the look of pore size after 15 days of consistent once-daily use.
How to use it: 2 to 3 pumps on dry skin once you’ve cleansed, in the morning, at night, or both, with a moisturizer on top.
Tradeoff: the INCI includes Methyldihydrojasmonate, a fragrance ingredient. With three Acids on board, sunscreen every day is especially important, and U Beauty’s FAQ suggests keeping it to evenings while any visible irritation settles.
Best for: anyone who wants the Repair Serum’s Vitamin C derivative alongside Acids and a Retinol Ester in one bottle.
Price: $228 for 50 ml, with 30 ml at $148 and 15 ml at $88.
3. Naturium Niacinamide Serum 12% Plus Zinc 2%: Best Niacinamide Alternative
Niacinamide is 10th on 111SKIN’s Repair Serum and fifth on its Eye Lift Gel. Here it’s second, after Water, with a stated 12%. Glycerin is fourth, Zinc PCA fifth, and Sodium Hyaluronate seventh, on a complete 16-item INCI.
Key features:
Niacinamide second: with a stated 12%.
Zinc PCA and Sodium Hyaluronate: fifth and seventh.
No fragrance term: on the INCI.
Tradeoff: Naturium suggests a patch test for sensitive skin.
Best for: anyone who wants Niacinamide on its own, morning and night, on the face, neck, and chest.
Price: $17 for 30 ml.
4. Paula’s Choice CLINICAL Ceramide-Enriched Firming Moisturizer: Best Vitamin C and Retinol Night Cream
This Paula’s Choice night cream lists a Vitamin C derivative and a Retinoid together: Sodium Ascorbyl Phosphate second, Glyceryl Ascorbate 12th, Tetrahexyldecyl Ascorbate 13th, and Retinol 14th, followed by five Ceramides, Cholesterol, and Squalane. Paula’s Choice gives the Retinol concentration as 0.1%.
Key features:
Three Vitamin C forms: Sodium Ascorbyl Phosphate leads them.
Retinol 14th: at a stated 0.1%.
Five Ceramides and Cholesterol: 15th to 20th.
Fragrance: nothing on the INCI.
Tradeoff: Paula’s Choice advises not applying it at the same time as other Vitamin C or Retinol products until you see how your skin responds, so it doesn’t stack with #1, #2, or #7 at first.
Best for: a single night cream covering 111SKIN’s Vitamin C and Retinoid families.
Price: $63 for 1.7 fl oz.
5. StriVectin Peptight 360 Tightening Eye Serum: Best Caffeine and Peptide Eye Alternative
111SKIN’s Eye Lift Gel lists Caffeine and Acetyl Hexapeptide-8. StriVectin’s eye serum also lists Caffeine, at 15th, after three Peptides: Palmitoyl Tetrapeptide-7 at 12th, Nicotiana Benthamiana Octapeptide-30 sh-Oligopeptide-2 at 13th, and Dipeptide-2 at 14th. StriVectin says it’s “Formulated with three unique peptides to visibly tighten, firm, and brighten the entire eye area.”
Key features:
Caffeine plus three Peptides: the same two ingredient families as the Eye Lift Gel.
Cooling metal applicator: which StriVectin says “gently massages and depuffs.”
Upper lids included: morning and evening, around the whole eye area.
Tradeoff: none of its Peptides is Acetyl Hexapeptide-8, the one 111SKIN uses.
Best for: visible puffiness and fine lines around the eyes.
Price: $82.
6. Kiehl’s Powerful-Strength Dark Circle-Reducing Vitamin C Eye Serum: Best Vitamin C Eye Alternative
111SKIN’s Black Diamond Eye Cream lists Sodium Ascorbyl Phosphate and Sodium Hyaluronate. Kiehl’s eye serum covers both families in its own way: Kiehl’s says it’s “formulated with 10% Pure Vitamin C, Tri-Peptide and Hyaluronic Acid.”
Key features:
A stated 10% Vitamin C: in an eye-area serum.
A Peptide and Hyaluronic Acid: per Kiehl’s.
Paraben-free and formulated without fragrance: per Kiehl’s.
Tradeoff: the full INCI didn’t display on Kiehl’s page when we read it, so the Peptide’s INCI name and the positions can’t be confirmed.
Best for: visible dark circles and a dull look under the eyes.
Price: $62 for 15 ml.
7. Good Molecules Gentle Retinol Cream: Best Low-Cost Retinol Alternative
The Black Diamond Retinol Oil is $260 for 30 ml. Good Molecules’ cream is $8 for 30 ml, with a stated 0.1% Retinol plus Bakuchiol, Grapeseed Oil, and Allantoin. Good Molecules gives a schedule: up to three nights a week for sensitive or dry skin, up to four for normal skin.
Key features:
A stated 0.1% Retinol: a gentle starting strength.
No fragrance: per Good Molecules.
Directions: a few drops after serums, avoiding the eyes, with sunscreen by day.
Tradeoff: it uses Retinol only, with no Hydroxypinacolone Retinoate, and its full INCI wasn’t on the page we read.
Best for: trying a Retinoid at a low stated strength before committing to a pricier formula.
Price: $8 for 30 ml.
8. Paula’s Choice Hyaluronic Acid Booster: Best Hyaluronic Acid Booster Alternative
111SKIN’s Aqua Booster pairs Sodium Hyaluronate with Urea and Lactic Acid. This booster sticks to hydration and lipids: Glycerin second, Sodium Hyaluronate third, Hyaluronic Acid fourth, then Ceramide NP, AP, and EOP fifth to seventh, and Panthenol 12th, on a complete 21-item INCI.
Key features:
Two Hyaluronic Acid forms near the top: third and fourth.
Three Ceramides: right after them.
Flexible use: alone or mixed into a moisturizer or serum, per Paula’s Choice.
Tradeoff: it has no Urea or Lactic Acid, so it doesn’t share those families with the Aqua Booster.
Best for: adding hydration to an existing routine, including under the eye area while avoiding the eye itself.
Price: $39 for 0.5 fl oz.
How to Choose a 111SKIN Alternative
Start from the product you use most: the serum (#1, #2, #3), the night routine (#4, #7), the eye products (#5, #6), or the booster (#8).
Match by INCI name, not by marketing: if Sodium Ascorbyl Phosphate is the Vitamin C you liked, #2 and #4 list it.
Don’t stack every Retinoid and Vitamin C at once: Paula’s Choice’s own advice for #4 is a good rule for the whole list, and our guide to serums to layer with Retinol shows what pairs more easily.
Check fragrance: 111SKIN lists Parfum on most of the products above. Among the alternatives, the Resurfacing Compound lists Methyldihydrojasmonate and the rest list none or say they’re made without it.
If you’re layering a Vitamin C serum with other steps, our guide to serums to layer with Vitamin C goes step by step.
When to See a Dermatologist
If a new Vitamin C, Acid, or Retinoid product leaves visible redness or stinging that doesn’t settle within a few days of stopping, a board-certified dermatologist can help you choose a gentler form.
Frequently Asked Questions
What is NAC on an ingredient list?
NAC is N-acetyl cysteine, listed on INCI labels as Acetyl Cysteine. On 111SKIN’s Repair Serum it sits eighth.
What are the best alternatives to 111SKIN?
Pick the ingredient family you want. For Vitamin C, iS Clinical Super Serum Advance+. For Sodium Ascorbyl Phosphate with Glutathione and a Retinol Ester, the Resurfacing Compound from U Beauty. For Niacinamide, Naturium’s 12% serum.
Is Sodium Ascorbyl Phosphate the same as Vitamin C?
It’s a Vitamin C derivative, not L-Ascorbic Acid itself. 111SKIN and U Beauty both list it; iS Clinical lists Ascorbic Acid.
Is there an alternative to the Black Diamond Retinol Oil?
For a Retinoid at a stated strength, Good Molecules Gentle Retinol Cream (0.1% Retinol) or the Paula’s Choice CLINICAL moisturizer (0.1% Retinol). Neither lists Hydroxypinacolone Retinoate.
Do I need a separate eye product?
Not necessarily. 111SKIN sells two, but if visible puffiness is your main concern, a Caffeine eye serum, such as StriVectin’s, covers that family on its own.
Related Reading
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