Ceretin Boost Age Defying Retinol Serum

Pur Cosmetics

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About this product

The Pur Cosmetics Ceretin Boost Age Defying Retinol Serum is a serums, essence, ampoule. Our analysis of its 31 ingredients (21 low-risk) rates it Excellent (94/100). Based on its ingredients, it looks well-suited to oily / acne-prone and dry skin.

Vegan-friendly Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Serums, Essence, Ampoules
Ingredients
31
Low-risk
21
Fragrance
Fragrance-free
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 5/5
Good for dry skin
Isononyl Isononanoate Caprylic/Capric Triglyceride Glycerin Coco-Caprylate/Caprate Lactic Acid
Caution for dry skin
Sodium Starch Octenylsuccinate Sorbitan Oleate Glycerin Triheptanoin Sodium Hydroxide
Oily/Acne-Prone Skin 1/0
Good for oily/acne-prone skin
Retinol
Sensitive Skin 1/6
Good for sensitive skin
Glycerin
Caution for sensitive skin
Sorbitan Oleate Caprylic/Capric Triglyceride Glycerin Lactic Acid Phenoxyethanol Retinol

Ingredients list

31 total
Lower hazard (1) Higher hazard (9)
All31 Skin Conditioning16 Solvent6 Viscosity Controlling6 Fragrance6 Emulsion Stabilising5 Viscosity Increasing Agent3 Humectant3 Hair Conditioning3
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
1
A
Caprylic/Capric Triglyceride
(Emollient, Masking, Perfuming, Skin Conditioning, Solvent)
1
Propanediol
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling)
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
Niacinamide
(Hair Conditioning, Skin Conditioning, Smoothing)
limnanthes alba seed oil
(Skin Conditioning)
1
A
Pentylene Glycol
(Skin Conditioning, Solvent)
1
A
Sodium Starch Octenylsuccinate
(Absorbent, Emulsion Stabilising, Viscosity Increasing Agent, Viscosity Controlling)
1
B
Coco-Caprylate/Caprate
(Emollient, Skin Conditioning)
Iris Pallida Leaf Cell Extract
(Antioxidant, Skin Protecting)
1
Bacillus Ferment
(Skin Conditioning)
9
A
Retinol
(Skin Conditioning)
Bad for Sensitive Skin
Bad for Sensitive Skin
4
B
Lactic Acid
(Exfoliant, Fragrance, Humectant, Ph Adjuster, Skin Conditioning Agent Humectant, Skin Conditioning, Buffering Agent)
Bad for Sensitive Skin
Bad for Sensitive Skin
BUTYROSPERMUM PARKII BUTTER EXTRACT
(Skin Conditioning)
Ceramide AP
(Hair Conditioning, Skin Conditioning)
Bisabolol
(Fragrance, Skin Conditioning, Soothing)
TOCOPHEROL
(Antioxidant, Fragrance, Skin Conditioning)
1
A
Carbomer
(Emulsion Stabilising, Viscosity Increasing Agent, Gel Forming, Viscosity Controlling)
1
Acrylates/C10-30 Alkyl Acrylate Crosspolymer
(Emulsion Stabilising, Film Forming, Viscosity Controlling)
1
Castor Oil/IPDI Copolymer
(Film Forming)
1
A
Triheptanoin
(Viscosity Increasing Agent, Skin Conditioning, Surfactant, Viscosity Controlling)
1
C13-15 Alkane
(Solvent)
3
B
Sodium Hydroxide
(Denaturant, Ph Adjuster, Buffering Agent)
1
Trisodium Ethylenediamine Disuccinate
(Chelating Agent)
1
B
Isononyl Isononanoate
(Skin Conditioning, Emollient, Antistatic Agent)
1
A
Ethylene/Propylene/Styrene Copolymer
(Viscosity Controlling)
1
A
Sorbitan Oleate
(Fragrance, Emulsifying, Surfactant)
Bad for Oily Skin
Bad for Oily Skin
Fungal Acne
Fungal Acne Trigger
4
A
Phenoxyethanol
(Fragrance, Preservative)
Paraben
Paraben
1
Triethoxycaprylylsilane
(Binding Agent, Binding)
2
Iron Oxides
(Colorant, Cosmetic Colorant)
CI 77891
(Colorant)

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

Caprylic/Capric Triglyceride
Emollient, Skin Conditioning
Glycerin
Humectant, Skin Protecting
Niacinamide
Skin Conditioning
limnanthes alba seed oil
Skin Conditioning
Pentylene Glycol
Skin Conditioning
Coco-Caprylate/Caprate
Emollient, Skin Conditioning

Benefits

Good for oily/acne-prone skin

Concerns

Contains paraben
Not fungal acne (malassezia) safe
Retinol — higher EWG
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

Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Caprylic/Capric Triglyceride
Emollient, Masking
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A EmollientMaskingPerfumingSkin conditioningSolvent
Propanediol
Solvent, Viscosity decreasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 SolventViscosity decreasing agentViscosity controlling
Niacinamide
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Hair conditioningSkin conditioningSmoothing
limnanthes alba seed oil
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Skin conditioning
Pentylene Glycol
Skin conditioning, Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningSolvent
Sodium Starch Octenylsuccinate
Absorbent, Emulsion stabilising
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A AbsorbentEmulsion stabilisingViscosity increasing agentViscosity controlling
Coco-Caprylate/Caprate
Emollient, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B EmollientSkin conditioning
Iris Pallida Leaf Cell Extract
Antioxidant, Skin protecting
Limited public safety data.Read moreShow less
EWG N/A AntioxidantSkin protecting
Bacillus Ferment
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioning
BUTYROSPERMUM PARKII BUTTER EXTRACT
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Skin conditioning
Ceramide AP
Hair conditioning, Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Hair conditioningSkin conditioning
Bisabolol
Fragrance, Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A FragranceSkin conditioningSoothing
TOCOPHEROL
Antioxidant, Fragrance
Limited public safety data.Read moreShow less
EWG N/A AntioxidantFragranceSkin conditioning
Carbomer
Emulsion stabilising, Viscosity increasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Emulsion stabilisingViscosity increasing agentGel formingViscosity controlling
+ 11 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
Retinol
Skin conditioning
Potentially a skin irritantRead moreShow less
EWG 9 CIR A Skin conditioning Bad for Sensitive Skin
Lactic Acid
Exfoliant, Fragrance
Skin irritation can occur at high concentrationRead moreShow less
EWG 4 CIR B ExfoliantFragranceHumectantPh adjusterSkin-conditioning agent -humectantSkin conditioningBuffering agent Bad for Sensitive Skin
Sorbitan Oleate
Fragrance, Emulsifying
Potentially comedogenic - can block poresRead moreShow less
EWG 1 CIR A FragranceEmulsifyingSurfactant Bad for Oily SkinFungal-acne trigger
Phenoxyethanol
Fragrance, Preservative
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR A FragrancePreservative Paraben

How to use

How to use

  • 1 Where it fits: Apply after toner and before moisturiser — thinnest to thickest.
  • 2 Evening: Use at night — start 2–3× a week and build up as your skin tolerates it.
  • 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

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

AHA (acid exfoliant) 5–10% (OTC)

OTC leave-on AHAs are usually 5–10%. The effect also depends on pH and free-acid value, not the percentage alone.

Lactic Acid

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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