Celestial Black Diamond Serum
The 111Skin Celestial Black Diamond Serum is a serums, essence, ampoule. Our analysis of its 25 ingredients (16 low-risk) rates it Excellent (98/100). 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.
The 111Skin Celestial Black Diamond Serum is a serums, essence, ampoule. Our analysis of its 25 ingredients (16 low-risk) rates it Excellent (98/100). 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.
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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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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Alcohol
(Antifoaming Agent, Antimicrobial, Astringent, Masking, Solvent, Viscosity Controlling) |
Bad for Dry Skin
Bad for Sensitive Skin
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Sorbitol
(Flavoring Agent, Fragrance, Humectant, Plasticizer, Skin Conditioning) |
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Isopropyl Myristate
(Binding Agent, Fragrance, Skin Conditioning, Emollient, Binding, Perfuming, Solvent) |
Bad for Oily Skin
Fungal Acne Trigger
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Benzyl Alcohol
(External Analgesic, Fragrance, Oral Health Care Drug, Preservative, Solvent, Viscosity Decreasing Agent, Masking) |
Allergens
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Aloe Barbadensis Extract
(Skin Conditioning) |
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Polysorbate 20
(Emulsifying, Surfactant) |
Fungal Acne Trigger
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Retinyl Palmitate
(Skin Conditioning, Skin Conditioning Miscellaneous) |
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TOCOPHEROL
(Antioxidant, Fragrance, Skin Conditioning) |
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Linoleic Acid
(Fragrance, Hair Conditioning, Skin Conditioning, Sufactantsurfactant Cleansing Agent Is Included As A Function For The Soap Form Of Linoleic Acid., Antistatic Agent, Emollient) |
Fungal Acne Trigger
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Sodium Hyaluronate
(Skin Conditioning, Humectant) |
Good for Dry Skin
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Carbomer
(Emulsion Stabilising, Viscosity Increasing Agent, Gel Forming, Viscosity Controlling) |
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Sodium Hydroxide
(Denaturant, Ph Adjuster, Buffering Agent) |
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Caproic Acid
(Cleansing, Emulsifying, Masking, Perfuming, Surfactant) |
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Aesculus Hippocastanum Extract
(Antioxidant, Astringent, Skin Conditioning, Skin Conditioning Emollient, Skin Protecting) |
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Sodium Ascorbyl Phosphate
(Antioxidant) |
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Xanthan Gum
(Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling) |
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glycyrrhiza glabra root extract
(Bleaching, Perfuming, Skin Conditioning, Skin Conditioning Emollient, Smoothing, Soothing) |
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prunus armeniaca kernel oil
(Fragrance, Skin Conditioning) |
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Acetyl Cysteine
(Antioxidant, Skin Conditioning) |
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Schinopsis Quebracho-Colorado Wood Extract
(Antioxidant, Astringent, Skin Conditioning) |
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Centella Asiatica Extract
(Cleansing, Skin Conditioning, Smoothing, Soothing, Tonic) |
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Diamond powder
(Abrasive) |
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PARFUM
(Fragrance, Perfuming) |
No personal ingredient notes yet. Save ingredients to your profile to get good/bad alerts here.
How to use
General guidance from this product's category and active ingredients — always follow the directions on the package.
Trust & honesty
Contains ingredients some choose to avoid or double-check while pregnant or nursing.
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.
The concentrations these actives are typically effective at in research — not a measurement of this product.
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.
Retinyl Palmitate
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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