Retin-C Treatment Complex

Kat Burki

Where to buy Possibly in stock

About this product

The Kat Burki Retin-C Treatment Complex is a treatment. Our analysis of its 37 ingredients (25 low-risk) rates it Excellent (96/100). Based on its ingredients, it looks well-suited to oily / acne-prone 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
Treatments
Ingredients
37
Low-risk
25
Fragrance
Contains fragrance
Origin
United States

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 4/8
Good for dry skin
Borago Officinalis Seed Oil Glycerin Camellia Sinensis Leaf Extract Lecithin
Caution for dry skin
Centella Asiatica Extract Xanthan Gum Glycerin Alcohol Camellia Sinensis Leaf Extract Sodium Hydroxide Polysorbate 20 Lecithin
Oily/Acne-Prone Skin 4/0
Good for oily/acne-prone skin
Sodium Ascorbyl Phosphate Alcohol Camellia Sinensis Leaf Extract Retinol
Sensitive Skin 7/8
Good for sensitive skin
Centella Asiatica Extract Sodium Ascorbyl Phosphate Glycerin Calophyllum Inophyllum Seed Oil Camellia Sinensis Leaf Extract Tocopheryl Acetate Aloe Barbadensis Leaf Juice
Caution for sensitive skin
Glycerin Arnica Montana Flower Extract Alcohol Camellia Sinensis Leaf Extract Sodium Benzoate Potassium Sorbate Benzyl Alcohol Retinol

Ingredients list

37 total
Lower hazard (1) Higher hazard (9)
All37 Skin Conditioning28 Fragrance6 Solvent6 Masking5 Preservative5 Antioxidant5 Viscosity Controlling5 Emulsion Stabilising4
EWG CIR Ingredient Name & Cosmetic Functions Notes
2
Arnica Montana Flower Extract
(Masking, Perfuming, Skin Conditioning)
1
A
Calendula Officinalis Extract
(Skin Conditioning)
Good for Oily Skin
Good for Oily Skin
1
B
Centella Asiatica Extract
(Cleansing, Skin Conditioning, Smoothing, Soothing, Tonic)
Chamomilla Recutita Extract
(Skin Conditioning)
Lavandula Angustifolia Extract
(Skin Conditioning)
1
Water
(Solvent)
B
Aloe Barbadensis Leaf Juice
(Skin Conditioning)
Good for Sensitive Skin
Good for Sensitive Skin
Hamamelis Virginiana Water
(Astringent, Hair Conditioning, Skin Conditioning, Soothing)
1
Dimethyl Sulfone
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling)
1
A
Sodium Ascorbyl Phosphate
(Antioxidant)
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
A
Xanthan Gum
(Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling)
3
Tocopheryl Acetate
(Antioxidant, Skin Conditioning)
Bad for Oily Skin
Bad for Oily Skin
5
A
Benzyl Alcohol
(External Analgesic, Fragrance, Oral Health Care Drug, Preservative, Solvent, Viscosity Decreasing Agent, Masking)
Allergens
Allergens
2
3
Lecithin
(Skin Conditioning, Emulsifying, Surfactant, Antistatic Agent, Emollient)
1
A
Pentylene Glycol
(Skin Conditioning, Solvent)
PARFUM
(Fragrance, Perfuming)
1
A
Sclerotium Gum
(Emulsion Stabilising, Skin Conditioning, Viscosity Increasing Agent, Viscosity Controlling)
1
A
Borago Officinalis Seed Oil
(Emollient, Skin Conditioning)
1
Calophyllum Inophyllum Seed Oil
(Antimicrobial, Antioxidant, Hair Conditioning, Oral Care Agent, Skin Conditioning, Uv Absorber)
Linum Usitatissimum Seed Oil
(Perfuming, Skin Conditioning)
oenothera biennis oil
(Skin Conditioning Emollient)
SIMMONDSIA CHINENSIS SEED OIL
(Hair Conditioning, Skin Conditioning, Skin Conditioning Emollient)
VITIS VINIFERA SEED OIL
(Skin Conditioning, Skin Conditioning Emollient)
3
B
Polysorbate 20
(Emulsifying, Surfactant)
Fungal Acne
Fungal Acne Trigger
1
A
Dehydroacetic Acid
(Preservative)
1
A
Sodium Dehydroacetate
(Preservative)
9
A
Retinol
(Skin Conditioning)
Bad for Sensitive Skin
Bad for Sensitive Skin
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
B
Potassium Phosphate
(Ph Adjuster, Buffering Agent)
3
B
Sodium Hydroxide
(Denaturant, Ph Adjuster, Buffering Agent)
TOCOPHEROL
(Antioxidant, Fragrance, Skin Conditioning)
1
A
Caesalpinia Spinosa Gum
(Adhesive, Skin Conditioning, Viscosity Increasing Agent, Film Forming, Viscosity Controlling)
1
Propolis Extract
(Skin Conditioning)
1
B
Camellia Sinensis Leaf Extract
(Antimicrobial, Antioxidant, Astringent, Emollient, Humectant, Masking, Oral Care Agent, Skin Conditioning, Skin Protecting, Tonic, Uv Absorber)
Good for Oily Skin
Good for Oily Skin
3
A
Potassium Sorbate
(Fragrance, Preservative)
3
A
Sodium Benzoate
(Fragrance, Preservative, Anticorrosive, Masking)

My Ingredient Notes

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Key ingredients

Antioxidants
Shields skin from free radical damage.
Vitamin E
Protects skin and soothes irritation.
Retinoid
Visibly reduces the signs of aging.
Vitamin C
Brightens, evens tone, and supports collagen.
Propolis
Soothes inflammation and supports healing.

Benefits

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

Concerns

Contains eu allergen
Not fungal acne (malassezia) safe
Retinol — higher EWG
May not suit dry skin
May not suit sensitive skin

EWG flags hazard, not real-world risk — ratings don't account for how much of an ingredient a product contains. Treat these as things to research, not verdicts. How we score →

Ingredients explained

Arnica Montana Flower Extract
Masking, Perfuming
Low-hazard ingredient.Read moreShow less
EWG 2 MaskingPerfumingSkin conditioning
Centella Asiatica Extract
Cleansing, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B CleansingSkin conditioningSmoothingSoothingTonic
Chamomilla Recutita Extract
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Skin conditioning
Lavandula Angustifolia Extract
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Skin conditioning
Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Hamamelis Virginiana Water
Astringent, Hair conditioning
Limited public safety data.Read moreShow less
EWG N/A AstringentHair conditioningSkin conditioningSoothing
Dimethyl Sulfone
Solvent, Viscosity decreasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 SolventViscosity decreasing agentViscosity controlling
Sodium Ascorbyl Phosphate
Antioxidant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Antioxidant
Xanthan Gum
Binding agent, Emulsion stabilising
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Binding agentEmulsion stabilisingSkin conditioningSurfactant -emulsifying agentViscosity increasing agentBindingGel formingViscosity controlling
Lecithin
Skin conditioning, Emulsifying
Low-to-moderate hazard.Read moreShow less
EWG 2–3 Skin conditioningEmulsifyingSurfactantAntistatic agentEmollient
Pentylene Glycol
Skin conditioning, Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningSolvent
PARFUM
Fragrance, Perfuming
Limited public safety data.Read moreShow less
EWG N/A FragrancePerfuming
Sclerotium Gum
Emulsion stabilising, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Emulsion stabilisingSkin conditioningViscosity increasing agentViscosity controlling
Borago Officinalis Seed Oil
Emollient, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A EmollientSkin conditioning
Calophyllum Inophyllum Seed Oil
Antimicrobial, Antioxidant
Low-hazard ingredient.Read moreShow less
EWG 1 AntimicrobialAntioxidantHair conditioningOral care agentSkin conditioningUv absorber
+ 13 more — see the full ingredients list above
Calendula Officinalis Extract
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioning Good for Oily Skin
Aloe Barbadensis Leaf Juice
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A CIR B Skin conditioning Good for Sensitive Skin
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
Tocopheryl Acetate
Antioxidant, Skin conditioning
Potentially comedogenic - can block poresRead moreShow less
EWG 3 AntioxidantSkin conditioning Bad for Oily Skin
Benzyl Alcohol
External analgesic, Fragrance
Moderate-hazard ingredient.Read moreShow less
EWG 5 CIR A External analgesicFragranceOral health care drugPreservativeSolventViscosity decreasing agentMasking Allergens
Polysorbate 20
Emulsifying, Surfactant
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B EmulsifyingSurfactant Fungal-acne trigger
Retinol
Skin conditioning
Potentially a skin irritantRead moreShow less
EWG 9 CIR A Skin conditioning Bad for Sensitive Skin
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
Camellia Sinensis Leaf Extract
Antimicrobial, Antioxidant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B AntimicrobialAntioxidantAstringentEmollientHumectantMaskingOral care agentSkin conditioningSkin protectingTonicUv absorber Good for Oily Skin

How to use

How to use

  • 1 Where it fits: Apply after toner and before moisturiser — thinnest to thickest.
  • 2 Morning only: Apply as the last step of your AM routine, after moisturiser, and reapply every ~2 hours of sun exposure.
  • 3 Wear SPF the next day: Acids and retinoids increase sun sensitivity — daily sunscreen is a must while using this.

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

Trust & honesty

Pregnancy & breastfeeding

Contains ingredients some choose to avoid or double-check while pregnant or nursing.

Often avoided
Retinoids (Vitamin A) (Retinol)

Topical retinoids (retinol, retinaldehyde, retinyl esters) are widely advised against in pregnancy as a precaution. The strongest evidence is for ORAL retinoids; topical absorption is low, but most clinicians err on the side of caution.

This is general information, not medical advice. Pregnancy guidance varies and depends on concentration and your individual situation — always check with your doctor, midwife or pharmacist. How we flag this.

Effective levels — general guide

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

Retinoids (Vitamin A) 0.01–1%

Most studied between 0.1% and 1%. Higher is not automatically better — irritation climbs with dose, so a well-formulated lower strength is often the sweet spot.

Retinol

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

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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