Below is every ingredient in Haruharu Wonder Black Rice Night Knight Retinol Serum 20 Ml explained, its standout actives, and the side effects reported in research for those actives — analysed for Indian skin.
Flags derived from the ingredient list using dermatology reference data (fungal-acne substrate, comedogenicity, EU allergens). General guidance, not a diagnosis.
Answers are derived from the printed ingredient list and dermatology reference data — general guidance, not a diagnosis or a therapeutic claim.
Bakuchiol is a plant-derived (Psoralea corylifolia) compound used as a gentler functional alternative to retinol, promoting collagen production and improving signs of photoaging. It has antioxidant and anti-inflammatory properties and is generally better tolerated than retinoids.
Oryza Sativa (Rice) Extract is a plant-derived ingredient rich in antioxidants, amino acids, and minerals used in skincare for its conditioning, brightening, and soothing properties. It is often included to support skin barrier function and provide mild anti-inflammatory effects.
Retinol is a vitamin A derivative that promotes cell turnover and stimulates collagen production, helping reduce fine lines, uneven texture, and hyperpigmentation. At 0.08% it is a low-strength concentration suited for sensitive skin or those new to retinoids.
Aspergillus Ferment is a bioactive ingredient produced by fermenting substrates with Aspergillus fungi, yielding a mixture of enzymes, peptides, polysaccharides, and amino acids used in skincare for hydrating, antioxidant, and skin-conditioning effects. It is often included for its purported brightening and barrier-supporting properties.
Adenosine is a nucleoside that signals through cell-surface receptors to promote dermal fibroblast activity and collagen/elastin production, helping reduce the appearance of fine lines and wrinkles. It also has anti-inflammatory and soothing properties at low concentrations commonly used in cosmetics (around 0.04-0.1%).
Panax Ginseng Root Extract is a botanical extract rich in ginsenosides and polysaccharides used in skincare for its antioxidant, anti-inflammatory, and circulation-supporting properties. It is often included to promote a brighter, more revitalized appearance and to help defend against oxidative stress.
Aggregated from the active ingredients in this product.
| Reported effect | How often | Notes |
|---|---|---|
| Mild contact irritation | Rare | Occasional redness or stinging, usually in sensitive or compromised skin. |
| Allergic contact dermatitis | Very rare | Isolated case reports; considered a low-sensitizing ingredient. |
| Comedogenicity / clogged pores | Rare | Generally low comedogenic potential, but acne-prone individuals may occasionally react. |
| Contact irritation | Very rare | Considered inert and non-irritating; isolated reports only. |
| Mild transient stinging or irritation | Uncommon | More likely at high concentrations or on compromised/broken skin. |
| Tacky or sticky skin feel | Common | A cosmetic sensation rather than an adverse reaction, more noticeable at higher concentrations. |
| Contact dermatitis or allergic reaction | Rare | True allergy to glycerin is uncommon; patch-test positivity is infrequent. |
| Skin dehydration in very low humidity | Rare | In very dry environments humectants may draw water from deeper skin layers if not paired with an occlusive. |
| Mild skin irritation or stinging | Rare | More likely on compromised or sensitive skin; generally well tolerated. |
| Comedogenicity / pore congestion | Uncommon | Low comedogenic potential, but possible in acne-prone individuals. |
| Contact urticaria | Very rare | Isolated case reports, often linked to seed protein sensitization. |
| Mild transient skin irritation or stinging | Uncommon | More likely at higher concentrations or on compromised skin barriers. |
| Contact dermatitis / allergic sensitization | Rare | Occasional case reports; patch testing can confirm. |
| Eye irritation on accidental contact | Uncommon | Relevant mainly in leave-on or rinse-off products near the eye area. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.
| Ingredient | What it does |
|---|---|
| Caprylic/Capric Triglyceride Emollient / skin-conditioning agent | Caprylic/Capric Triglyceride is a lightweight emollient derived from coconut or palm oil and glycerin, used to soften skin, improve spreadability, and act as a solvent for oil-soluble ingredients. It is well-tolerated and serves primarily as a base ingredient rather than an active. |
| Hydrogenated Polyisobutene Emollient / occlusive | Hydrogenated Polyisobutene is a synthetic hydrocarbon emollient that imparts a smooth, non-greasy slip and forms an occlusive film to reduce transepidermal water loss. It is widely used as a lightweight alternative to mineral oil in moisturizers, lip products, and color cosmetics. |
| Glycerin Humectant | Glycerin is a widely used humectant that attracts and retains water in the skin, helping to hydrate the stratum corneum and support barrier function. It is considered safe and well-tolerated across most skin types and concentrations. |
| Helianthus Annuus (Sunflower) Seed Oil Emollient / skin-conditioning oil | Helianthus Annuus (Sunflower) Seed Oil is a plant-derived oil rich in linoleic acid and vitamin E used to soften skin and support the skin barrier. It functions as an emollient and occlusive agent in many cosmetic formulations. |
| 2-Hexanediol Humectant/preservative-booster | 1,2-Hexanediol (commonly written 2-hexanediol) is a multifunctional diol used in skincare primarily as a humectant, solvent, and preservative-enhancing agent that improves the antimicrobial efficacy of formulations. It is generally well tolerated and considered a base/formulation ingredient rather than a treatment active. |
| Bakuchiol Key active Retinol alternative / antioxidant | Bakuchiol is a plant-derived (Psoralea corylifolia) compound used as a gentler functional alternative to retinol, promoting collagen production and improving signs of photoaging. It has antioxidant and anti-inflammatory properties and is generally better tolerated than retinoids. |
| C14-22 Alcohols Emulsifier/emollient | C14-22 Alcohols is a blend of fatty alcohols (with carbon chains from 14 to 22) used in skincare as a co-emulsifier, thickener, and emollient to stabilize emulsions and improve skin feel. It is typically paired with C12-20 Alkyl Glucoside to form a self-emulsifying system. |
| Potassium Cetyl Phosphate Emulsifier | Potassium Cetyl Phosphate is an anionic emulsifier and surfactant used in oil-in-water formulations to stabilize emulsions and improve texture. It is considered a formulation/base ingredient rather than a treatment active. |
| C12-20 Alkyl Glucoside Emulsifier / surfactant | C12-20 Alkyl Glucoside is a non-ionic, sugar-derived (glucose plus fatty alcohol) emulsifier and mild surfactant used to stabilize oil-in-water emulsions and improve texture. It is generally well tolerated and considered gentle, often used in formulations marketed for sensitive skin. |
| Oryza Sativa (Rice) Extract(2 Key active Antioxidant/skin-conditioning | Oryza Sativa (Rice) Extract is a plant-derived ingredient rich in antioxidants, amino acids, and minerals used in skincare for its conditioning, brightening, and soothing properties. It is often included to support skin barrier function and provide mild anti-inflammatory effects. |
| Arginine Amino acid / pH adjuster & conditioning agent | Arginine is a basic amino acid used in skincare primarily as a pH buffer/neutralizer and humectant-like conditioning agent that supports skin hydration and barrier function. It is generally well tolerated and often paired with acidic ingredients to balance formulation pH. |
| Acrylates/C10-30 Alkyl Acrylate Crosspolymer Rheology modifier / emulsion stabilizer | Acrylates/C10-30 Alkyl Acrylate Crosspolymer is a synthetic crosslinked acrylic polymer used to thicken, gel, and stabilize emulsions in skincare and cosmetic formulations. It helps suspend ingredients and provides a smooth, consistent texture without acting as a treatment active. |
| Phyllostachys Pubescens Shoot Bark Extract(1 Soothing/antioxidant botanical extract | Phyllostachys Pubescens (moso bamboo) shoot bark extract is a plant-derived ingredient rich in silica, polysaccharides, and flavonoids used in skincare for its conditioning, antioxidant, and soothing properties. It is typically included to support skin hydration and provide mild protective and anti-inflammatory benefits. |
| Disodium Edta Chelating agent | Disodium EDTA is a chelating agent used in cosmetics to bind metal ions, improving product stability, preventing rancidity, and enhancing the efficacy of preservatives. It is a formulation/base ingredient rather than a treatment active. |
| Retinol(0.08%) Key active Anti-aging active (vitamin A derivative) | Retinol is a vitamin A derivative that promotes cell turnover and stimulates collagen production, helping reduce fine lines, uneven texture, and hyperpigmentation. At 0.08% it is a low-strength concentration suited for sensitive skin or those new to retinoids. |
| Aspergillus Ferment Key active Fermented extract / skin conditioning | Aspergillus Ferment is a bioactive ingredient produced by fermenting substrates with Aspergillus fungi, yielding a mixture of enzymes, peptides, polysaccharides, and amino acids used in skincare for hydrating, antioxidant, and skin-conditioning effects. It is often included for its purported brightening and barrier-supporting properties. |
| Ethylhexylglycerin Preservative booster / skin-conditioning agent | Ethylhexylglycerin is a multifunctional glyceryl ether used in cosmetics primarily as a preservative-enhancing agent and emollient, often paired with phenoxyethanol to broaden antimicrobial efficacy. It also acts as a deodorizing agent and humectant in skincare formulations. |
| Polyglyceryl-10 Stearate Emulsifier | Polyglyceryl-10 Stearate is a non-ionic emulsifier and surfactant derived from polyglycerol and stearic acid, used to blend oil and water phases and stabilize emulsions in skincare formulations. It is valued for its mildness and is common in formulations marketed as gentle or PEG-free. |
| Xanthan Gum Thickener/stabilizer | Xanthan gum is a polysaccharide produced by bacterial fermentation, used in skincare as a thickening, gelling, and emulsion-stabilizing agent. It improves product texture and suspension of ingredients without contributing active treatment effects. |
| Adenosine Key active Anti-aging/soothing active | Adenosine is a nucleoside that signals through cell-surface receptors to promote dermal fibroblast activity and collagen/elastin production, helping reduce the appearance of fine lines and wrinkles. It also has anti-inflammatory and soothing properties at low concentrations commonly used in cosmetics (around 0.04-0.1%). |
| Hydrogenated Lecithin Emollient / Emulsifier | Hydrogenated lecithin is a phospholipid derived from lecithin through hydrogenation, used in skincare as an emulsifier, emollient, and skin-conditioning agent. It also helps stabilize formulations and form liposomes that can aid delivery of other ingredients. |
| Glyceryl Stearate Emulsifier/emollient | Glyceryl Stearate is a glycerol ester of stearic acid widely used as a non-ionic emulsifier and emollient to stabilize oil-in-water formulations and improve skin feel. It functions as a base/formulation ingredient rather than a therapeutic active. |
| Polyglyceryl-2 Stearate Emulsifier | Polyglyceryl-2 Stearate is a polyglycerol ester of stearic acid used as a non-ionic, oil-in-water emulsifier and emollient in creams and lotions. It helps stabilize formulations and improve skin feel without active therapeutic effects. |
| Ceramide Np Skin-barrier replenishing lipid / emollient | Ceramide NP (formerly ceramide 3) is a naturally occurring sphingolipid that helps restore and maintain the skin's lipid barrier, reducing transepidermal water loss and improving hydration. It is widely used in moisturizers and barrier-repair formulations. |
| Dipropylene Glycol Solvent/humectant | Dipropylene glycol is a clear, low-viscosity glycol used in cosmetics primarily as a solvent, humectant, and viscosity-reducing agent. It helps dissolve fragrances and other ingredients while contributing mild moisture-retention properties. |
| Stearyl Alcohol Emollient/emulsifier | Stearyl alcohol is a fatty alcohol used in skincare as an emollient, emulsion stabilizer, and thickening agent to improve texture and prevent ingredient separation. It softens skin and helps maintain the consistency of creams and lotions. |
| Panax Ginseng Root Extract Key active Antioxidant / skin-conditioning | Panax Ginseng Root Extract is a botanical extract rich in ginsenosides and polysaccharides used in skincare for its antioxidant, anti-inflammatory, and circulation-supporting properties. It is often included to promote a brighter, more revitalized appearance and to help defend against oxidative stress. |
| Glucose Humectant/skin-conditioning agent | Glucose is a simple sugar used in skincare primarily as a humectant and skin-conditioning ingredient, helping to attract and retain moisture in the skin. It can also serve as a substrate in formulations and contributes to the skin's natural moisturizing factors. |
| Hydroxyacetophenone Antioxidant / soothing agent | Hydroxyacetophenone (acetophenone-based compound, often 4'-hydroxyacetophenone) is used in skincare primarily as an antioxidant and skin-conditioning agent that can also enhance the stability and efficacy of preservative systems. It is valued for its soothing properties and helps neutralize free radicals while reducing potential irritation from other formulation components. |
| Butylene Glycol Humectant / solvent | Butylene glycol is a small diol commonly used in skincare as a humectant, solvent, and viscosity-reducing agent that helps dissolve other ingredients and improve skin feel. It is widely regarded as safe and non-sensitizing for the majority of users at cosmetic concentrations. |
| Caprylyl Glycol Humectant / skin-conditioning agent and preservative booster | Caprylyl glycol is a multifunctional emollient and humectant derived from caprylic acid that helps hydrate skin and enhance the efficacy of preservatives in formulations. It is widely used as a stabilizing and conditioning base ingredient rather than a therapeutic active. |
| Cyclodextrin Stabilizer / delivery carrier | Cyclodextrin is a cyclic oligosaccharide that forms inclusion complexes with hydrophobic molecules, used in skincare to stabilize, solubilize, and improve delivery of active ingredients while reducing odor and irritation. It functions primarily as a formulation aid rather than a direct skin-active. |
Key active = does the main work. Ingredient explanations are drawn from public databases & literature.
Peer-reviewed papers on the active ingredients in this product, via PubMed.