Repair Serum NAC Y²

111Skin

Where to buy Possibly in stock

About this product

The 111Skin Repair Serum NAC Y² is a serums, essence, ampoule. Our analysis of its 29 ingredients (25 low-risk) rates it Excellent (100/100). Based on its ingredients, it looks well-suited to oily / acne-prone and dry skin. Heads up: it contains fragrance, which can irritate sensitive or reactive skin.

Vegan-friendly Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Serums, Essence, Ampoules
Ingredients
29
Low-risk
25
Fragrance
Contains fragrance
Origin
United Kingdom
Data updated
May 2026

The evidence

Quick Product Notes

Paraben-Free Sulfate-Free Alcohol-Free Silicone-Free EU Allergen-Free Fungal Acne (Malassezia) Safe

Notable Effects & Ingredients

No Notable Effects & Ingredients

Ingredients Related to Skin Types

Good   Bad — tap a skin type to see which ingredients · estimated from ingredient functions
Dry Skin 7/7
Good for dry skin
Glycosphingolipids Sorbitol Isopropyl Myristate Caprylyl Glycol Glycerin Lecithin Aloe Barbadensis Leaf Extract
Caution for dry skin
Centella Asiatica Extract Sorbitan Palmitate Glycerin Polyglyceryl-10 Oleate Alcohol Sodium Hydroxide Lecithin
Oily/Acne-Prone Skin 2/0
Good for oily/acne-prone skin
Sodium Ascorbyl Phosphate Alcohol
Sensitive Skin 6/7
Good for sensitive skin
Centella Asiatica Extract Sodium Ascorbyl Phosphate Acetyl Cysteine Glycerin Hydroxyacetophenone Aloe Barbadensis Leaf Extract
Caution for sensitive skin
Beta-Sitosterol Sorbitol Isopropyl Myristate Calendula Officinalis Flower Extract Glycerin Phenylpropanol Alcohol

Ingredients list

29 total
Lower hazard (1) Higher hazard (3)
All29 Skin Conditioning21 Humectant6 Solvent6 Perfuming5 Emollient5 Fragrance4 Emulsion Stabilising4 Masking4
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
2
A
Glycerin
(Denaturant, Fragrance, Hair Conditioning, Humectant, Oral Care Agent, Oral Health Care Drug, Skin Protecting, Viscosity Decreasing Agent, Perfuming, Solvent)
Good for Dry Skin
Good for Dry Skin
Fungal Acne
Fungal Acne Trigger
1
Sorbitol
(Flavoring Agent, Fragrance, Humectant, Plasticizer, Skin Conditioning)
1
B
Isopropyl Myristate
(Binding Agent, Fragrance, Skin Conditioning, Emollient, Binding, Perfuming, Solvent)
Bad for Oily Skin
Bad for Oily Skin
Fungal Acne
Fungal Acne Trigger
2
Alcohol
(Antifoaming Agent, Antimicrobial, Astringent, Masking, Solvent, Viscosity Controlling)
Bad for Dry Skin
Bad for Dry Skin
Bad for Sensitive Skin
Bad for Sensitive Skin
1
Polyacrylate Crosspolymer-6
(Emulsion Stabilising, Viscosity Controlling)
1
A
Sodium Ascorbyl Phosphate
(Antioxidant)
1
B
Acetyl Cysteine
(Antioxidant, Skin Conditioning)
1
Escin
(Tonic)
1
A
Niacinamide
(Hair Conditioning, Skin Conditioning, Smoothing)
1
A
Calendula Officinalis Flower Extract
(Masking, Perfuming, Skin Conditioning)
Cistus Incanus Flower/Leaf/Stem Extract
(Skin Conditioning)
1
3
B
Aloe Barbadensis Leaf Extract
(Emollient, Humectant, Oral Care Agent, Skin Conditioning)
Good for Sensitive Skin
Good for Sensitive Skin
1
B
Centella Asiatica Extract
(Cleansing, Skin Conditioning, Smoothing, Soothing, Tonic)
Aesculus Hippocastanum Seed Extract
(Skin Conditioning)
2
3
Lecithin
(Skin Conditioning, Emulsifying, Surfactant, Antistatic Agent, Emollient)
1
A
Beta-Sitosterol
(Emulsion Stabilising, Masking, Skin Conditioning, Stabilising)
1
Soy Isoflavones
(Skin Conditioning)
1
Glycosphingolipids
(Skin Conditioning, Emollient)
Polyglyceryl-6 Laurate
(Emulsifying)
1
B
Polyglyceryl-10 Oleate
(Skin Conditioning, Emulsifying, Surfactant)
1
A
Carbomer
(Emulsion Stabilising, Viscosity Increasing Agent, Gel Forming, Viscosity Controlling)
1
Hydroxyacetophenone
(Antioxidant)
1
A
1,2-Hexanediol
(Solvent)
1
A
Caprylyl Glycol
(Hair Conditioning, Skin Conditioning, Emollient, Humectant)
1
A
Sorbitan Palmitate
(Emulsifying, Surfactant)
Fungal Acne
Fungal Acne Trigger
3
B
Sodium Hydroxide
(Denaturant, Ph Adjuster, Buffering Agent)
1
Phenylpropanol
(Masking, Perfuming, Solvent)
PARFUM
(Fragrance, Perfuming)

My Ingredient Notes

No personal ingredient notes yet. Save ingredients to your profile to get good/bad alerts here.

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Key ingredients

Antioxidants
Shields skin from free radical damage.
Vitamin C
Brightens, evens tone, and supports collagen.
Niacinamide
Strengthens, smooths, and brightens skin.

Benefits

HydratingBoosts hydration and relieves dry, tight skin.
Redness ReducingSoothes visible redness and calms irritation.
Reduces IrritationEases discomfort and supports skin resilience.
Barrier RepairStrengthen and restore your skin's natural barrier.
Scar HealingImproves the look of marks and scars.
Skin TextureSmooths rough patches and refines texture.
Anti-AgingSoftens lines and helps skin look youthful.
BrighteningRestores radiance to dull, tired skin.

Concerns

Not fungal acne (malassezia) safe
May not suit sensitive skin

Ingredients explained

Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Sorbitol
Flavoring agent, Fragrance
Low-hazard ingredient.Read moreShow less
EWG 1 Flavoring agentFragranceHumectantPlasticizerSkin conditioning
Polyacrylate Crosspolymer-6
Emulsion stabilising, Viscosity controlling
Low-hazard ingredient.Read moreShow less
EWG 1 Emulsion stabilisingViscosity controlling
Sodium Ascorbyl Phosphate
Antioxidant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Antioxidant
Acetyl Cysteine
Antioxidant, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B AntioxidantSkin conditioning
Escin
Tonic
Low-hazard ingredient.Read moreShow less
EWG 1 Tonic
Niacinamide
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Hair conditioningSkin conditioningSmoothing
Calendula Officinalis Flower Extract
Masking, Perfuming
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A MaskingPerfumingSkin conditioning
Cistus Incanus Flower/Leaf/Stem Extract
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Skin conditioning
Centella Asiatica Extract
Cleansing, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B CleansingSkin conditioningSmoothingSoothingTonic
Aesculus Hippocastanum Seed Extract
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Skin conditioning
Lecithin
Skin conditioning, Emulsifying
Low-to-moderate hazard.Read moreShow less
EWG 2–3 Skin conditioningEmulsifyingSurfactantAntistatic agentEmollient
Beta-Sitosterol
Emulsion stabilising, Masking
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Emulsion stabilisingMaskingSkin conditioningStabilising
Soy Isoflavones
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioning
Glycosphingolipids
Skin conditioning, Emollient
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioningEmollient
+ 9 more — see the full ingredients list above
Glycerin
Denaturant, Fragrance
Low-hazard ingredient.Read moreShow less
EWG 2 CIR A DenaturantFragranceHair conditioningHumectantOral care agentOral health care drugSkin protectingViscosity decreasing agentPerfumingSolvent Good for Dry SkinFungal-acne trigger
Isopropyl Myristate
Binding agent, Fragrance
Potentially comedogenic - can block poresRead moreShow less
EWG 1 CIR B Binding agentFragranceSkin conditioningEmollientBindingPerfumingSolvent Bad for Oily SkinFungal-acne trigger
Alcohol
Antifoaming agent, Antimicrobial
Causes moisture evaporation - prone to dry out skinRead moreShow less
EWG 2 Antifoaming agentAntimicrobialAstringentMaskingSolventViscosity controlling Bad for Dry SkinBad for Sensitive Skin
Aloe Barbadensis Leaf Extract
Emollient, Humectant
Low-to-moderate hazard.Read moreShow less
EWG 1–3 CIR B EmollientHumectantOral care agentSkin conditioning Good for Sensitive Skin
Sorbitan Palmitate
Emulsifying, Surfactant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A EmulsifyingSurfactant Fungal-acne trigger

How to use

How to use

  • 1 Where it fits: Apply after toner and before moisturiser — thinnest to thickest.
  • 2 Morning works well: Antioxidants like vitamin C pair well with daytime use under sunscreen.

General guidance from this product's category and active ingredients — always follow the directions on the package.

Trust & honesty

Effective levels — general guide

The concentrations these actives are typically effective at in research — not a measurement of this product.

Vitamin C (ascorbic) 5–20%

L-ascorbic acid is usually used at 5–20% (around 10–15% is common). Above ~20% adds little and tends to irritate more; it also needs a low pH to work.

Sodium Ascorbyl Phosphate

Niacinamide 2–5% (up to 10%)

Most research uses 2–5%; some formulas go to 10%. Very high levels can cause flushing in sensitive skin.

Niacinamide

INCI lists don't disclose amounts, and we don't claim to know this product's levels — these are the ranges these ingredients are usually effective at, so you can tell a real formula from "fairy-dusting" a marketed active. How we estimate this.

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