Deep Sleep Overnight Cleanser

This Works

Where to buy Possibly in stock

About this product

The This Works Deep Sleep Overnight Cleanser is a leave on & sleeping mask. Our analysis of its 25 ingredients (14 low-risk) rates it Excellent (93/100). Based on its ingredients, it looks well-suited to 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
Leave On & Sleeping Masks
Ingredients
25
Low-risk
14
Fragrance
Contains fragrance
Origin
United Kingdom

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 7/3
Good for dry skin
Saccharide Isomerate Copper PCA Sodium Hyaluronate Glycerin Fructooligosaccharides Lactic Acid Potassium Lactate
Caution for dry skin
Sodium Lauroyl Oat Amino Acids Kaolin Glycerin
Oily/Acne-Prone Skin No data
Sensitive Skin 2/10
Good for sensitive skin
Kaolin Glycerin
Caution for sensitive skin
Vetiveria Zizanoides Root Oil Sodium Citrate Glycerin Citric Acid Sodium Benzoate Lactic Acid Linalool Benzyl Alcohol Ormenis Multicaulis Flower Oil Pogostemon Cablin Leaf Oil

Ingredients list

25 total
Lower hazard (1) Higher hazard (5)
All25 Skin Conditioning12 Humectant9 Fragrance8 Masking7 Perfuming5 Buffering Agent4 Solvent3 Ph Adjuster3
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
1
B
Sodium Lauroyl Oat Amino Acids
(Hair Conditioning, Skin Conditioning, Surfactant Cleansingagent, Antistatic Agent)
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
Dehydroxanthan Gum
(Emulsion Stabilising, Film Forming, Hair Fixing, Viscosity Controlling)
1
Fructooligosaccharides
(Humectant, Skin Conditioning)
Beta Vulgaris Root Extract
(Skin Conditioning)
5
A
Benzyl Alcohol
(External Analgesic, Fragrance, Oral Health Care Drug, Preservative, Solvent, Viscosity Decreasing Agent, Masking)
Allergens
Allergens
1
A
Kaolin
(Abrasive, Absorbent, Anticaking Agent, Bulking Agent, Opacifying, Skin Protecting, Slip Modifier)
4
B
Potassium Lactate
(Buffering Agent, Exfoliant, Humectant, Skin Conditioning)
1
A
Ethylhexylglycerin
(Deodorant, Skin Conditioning)
2
A
Citric Acid
(Chelating Agent, Fragrance, Ph Adjuster, Buffering Agent, Masking)
Bad for Sensitive Skin
Bad for Sensitive Skin
1
Saccharide Isomerate
(Humectant)
PARFUM
(Fragrance, Perfuming)
1
Copper PCA
(Humectant, Skin Conditioning)
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
5
Linalool
(Fragrance, Deodorant, Masking)
Allergens
Allergens
Cinnamomum Camphora Linalooliferum Wood Oil
(Perfuming)
lavandula angustifolia oil
(Fragrance, Tonic)
Ormenis Multicaulis Flower Oil
(Perfuming)
Pogostemon Cablin Leaf Oil
(Masking)
1
A
Sodium Hyaluronate
(Skin Conditioning, Humectant)
Good for Dry Skin
Good for Dry Skin
1
Vetiveria Zizanoides Root Oil
(Masking, Perfuming, Tonic)
Salix Petsusu Bark Extract
(Humectant)
1
A
Sodium Citrate
(Ph Adjuster, Buffering Agent, Chelating, Masking)
3
A
Sodium Benzoate
(Fragrance, Preservative, Anticorrosive, Masking)

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

Sodium Lauroyl Oat Amino Acids
Skin Conditioning
Glycerin
Humectant, Skin Protecting
Fructooligosaccharides
Humectant, Skin Conditioning
Beta Vulgaris Root Extract
Skin Conditioning
Kaolin
Skin Protecting
Potassium Lactate
Exfoliant, Humectant

Benefits

Good for dry skin

Concerns

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

Ingredients explained

Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Sodium Lauroyl Oat Amino Acids
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Hair conditioningSkin conditioningSurfactant - cleansingagentAntistatic agent
Dehydroxanthan Gum
Emulsion stabilising, Film forming
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Emulsion stabilisingFilm formingHair fixingViscosity controlling
Fructooligosaccharides
Humectant, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 HumectantSkin conditioning
Beta Vulgaris Root Extract
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Skin conditioning
Kaolin
Abrasive, Absorbent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A AbrasiveAbsorbentAnticaking agentBulking agentOpacifyingSkin protectingSlip modifier
Potassium Lactate
Buffering agent, Exfoliant
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR B Buffering agentExfoliantHumectantSkin conditioning
Ethylhexylglycerin
Deodorant, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A DeodorantSkin conditioning
Saccharide Isomerate
Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 Humectant
PARFUM
Fragrance, Perfuming
Limited public safety data.Read moreShow less
EWG N/A FragrancePerfuming
Copper PCA
Humectant, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 HumectantSkin conditioning
Cinnamomum Camphora Linalooliferum Wood Oil
Perfuming
Limited public safety data.Read moreShow less
EWG N/A Perfuming
lavandula angustifolia oil
Fragrance, Tonic
Limited public safety data.Read moreShow less
EWG N/A FragranceTonic
Ormenis Multicaulis Flower Oil
Perfuming
Limited public safety data.Read moreShow less
EWG N/A Perfuming
Pogostemon Cablin Leaf Oil
Masking
Limited public safety data.Read moreShow less
EWG N/A Masking
+ 4 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
Benzyl Alcohol
External analgesic, Fragrance
Moderate-hazard ingredient.Read moreShow less
EWG 5 CIR A External analgesicFragranceOral health care drugPreservativeSolventViscosity decreasing agentMasking Allergens
Citric Acid
Chelating agent, Fragrance
Skin irritation can occur at high concentrationRead moreShow less
EWG 2 CIR A Chelating agentFragrancePh adjusterBuffering agentMasking 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
Linalool
Fragrance, Deodorant
Moderate-hazard ingredient.Read moreShow less
EWG 5 FragranceDeodorantMasking Allergens
Sodium Hyaluronate
Skin conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningHumectant Good for Dry Skin

How to use

How to use

  • 1 Evening, start slow: Best in the PM a few times a week to begin with; avoid layering with other strong actives the same night.
  • 2 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

Effective levels — general guide

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

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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