Deep Sleep Overnight Cleanser
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.
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.
Summarised from our ingredient analysis — not brand marketing copy.
The evidence
| EWG | CIR | Ingredient Name & Cosmetic Functions | Notes |
|---|---|---|---|
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Water
(Solvent) |
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Sodium Lauroyl Oat Amino Acids
(Hair Conditioning, Skin Conditioning, Surfactant Cleansingagent, Antistatic Agent) |
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Glycerin
(Denaturant, Fragrance, Hair Conditioning, Humectant, Oral Care Agent, Oral Health Care Drug, Skin Protecting, Viscosity Decreasing Agent, Perfuming, Solvent) |
Good for Dry Skin
Fungal Acne Trigger
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Dehydroxanthan Gum
(Emulsion Stabilising, Film Forming, Hair Fixing, Viscosity Controlling) |
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Fructooligosaccharides
(Humectant, Skin Conditioning) |
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Beta Vulgaris Root Extract
(Skin Conditioning) |
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Benzyl Alcohol
(External Analgesic, Fragrance, Oral Health Care Drug, Preservative, Solvent, Viscosity Decreasing Agent, Masking) |
Allergens
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Kaolin
(Abrasive, Absorbent, Anticaking Agent, Bulking Agent, Opacifying, Skin Protecting, Slip Modifier) |
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Potassium Lactate
(Buffering Agent, Exfoliant, Humectant, Skin Conditioning) |
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Ethylhexylglycerin
(Deodorant, Skin Conditioning) |
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Citric Acid
(Chelating Agent, Fragrance, Ph Adjuster, Buffering Agent, Masking) |
Bad for Sensitive Skin
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Saccharide Isomerate
(Humectant) |
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PARFUM
(Fragrance, Perfuming) |
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Copper PCA
(Humectant, Skin Conditioning) |
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Lactic Acid
(Exfoliant, Fragrance, Humectant, Ph Adjuster, Skin Conditioning Agent Humectant, Skin Conditioning, Buffering Agent) |
Bad for Sensitive Skin
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Linalool
(Fragrance, Deodorant, Masking) |
Allergens
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Cinnamomum Camphora Linalooliferum Wood Oil
(Perfuming) |
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lavandula angustifolia oil
(Fragrance, Tonic) |
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Ormenis Multicaulis Flower Oil
(Perfuming) |
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Pogostemon Cablin Leaf Oil
(Masking) |
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Sodium Hyaluronate
(Skin Conditioning, Humectant) |
Good for Dry Skin
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Vetiveria Zizanoides Root Oil
(Masking, Perfuming, Tonic) |
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Salix Petsusu Bark Extract
(Humectant) |
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Sodium Citrate
(Ph Adjuster, Buffering Agent, Chelating, Masking) |
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Sodium Benzoate
(Fragrance, Preservative, Anticorrosive, Masking) |
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How to use
General guidance from this product's category and active ingredients — always follow the directions on the package.
Trust & honesty
The concentrations these actives are typically effective at in research — not a measurement of this product.
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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